Environmental Analytical Chemistry

1.

Dioxins Analysis

1-1. Presep® Series for Dioxins Clean up

Presep® Multilayer Silica Gel

Presep® Active Carbon-impregnated Silica Gel

Presep® Acitive Carbon-impregnated Silica Gel (Reverse Column)

Related products

1-2. Standard

2,2’,3-Trihydroxybiphenyl Standard

1-3. Solvents for Dioxins Analysis

2.

PFCs Analysis

Presep®-C PFC(short), Presep®-C PFC-II

3.

Water Quality Testing

3-1. Anionic Surfactant Analysis (Linear Alkylbenzene Sulfonate : LAS)

3-2. Standards

3-3. Musty-Odor Standard Analysis

4.

Food Analysis

4-1. Melamine Standards

4-2. A Clean up of Aflatoxins

AFLAKING; Immunoaffinity Colums

5.

Biocide

Dimethylfumarate (DMF) Standard

6.

Metal Standard Solutions

JCSS

7.

Solvents

7-1. for Pesticide Residue and PCB Analysis

7-2. for LC/MS

7-3. for HPLC

8.

Pretreatment Columns

Presep® Series

9.

High-sealed Storage Bottles

High-sealed Storage Bottles




PRINT (2.2 MB)





1.

Dioxins Analysis

1-1.

Presep® Series for Dioxins Clean up

For analysis of dioxins, samples are treated for cleanup by multilayer silica gel column chromatography or activated carbon silica gel chromatography. These cartridge columns are filled with solid-phase carriers for the treatment.

 

03_1.psd 

 

Features

Design conforming to JIS K 0311 (Method for determination of dioxins and coplanar PCB in exhaust gas) and JIS K 0312 (Method for determination of dioxins and coplanar PCB in industrial water and waste water)

1.The column plug and moisture-proof aluminum packaging bag are used to prevent quality deterioration during storage to keep stable quality.

2.Suitability for analysis of dioxins * (Blank test for dioxins and coplanar PCB by high-resolution GC/MS has been implemented.)

3.The use of eluent is reduced by the use of reverse elution method. (Presep® Active Carbon-impregnated Silica Gel Reverse Column)

* Except Presep® Multilayer Silica Gel

 

Dioxins analysis flow

62293.png 

Presep® Multilayer Silica Gel

As one of the pretreatment processes of dioxins analysis, clean up using a multilayer silica gel column with various kinds of chemically modified silica gel laminated is carried out in order to efficiently remove foreign substances such as compounds containing sulfur, polycyclic aromatic hydrocarbons, coloring substances, etc. which coexist in measured specimens. However, the packing operation of preparing the multilayer silica gel column to be used for this analysis is extremely troublesome. Wako has launched a product with various kinds of chemically modified silica gel laminated in a glass column.

 

04_1.psd 

Column configuration

Column chromatography tube: Glass tube with inside diameter of 15 mm

 

62318.png 

Product Name

Package Size

Wako Cat. No.

Presep® Multilayer Silica Gel

5 units

295-41651

Example of clean up of soil extracted sample using Presep® Multilayer Silica Gel after treatment.

62365.png 

<Related Products>

Product Name

Grade

Package Size

Wako Cat. No.

2% Potassium Hydroxide-impregnated Silica Gel

for Dioxins Analysis

100 g

167-19251

10% Silver Nitrate-impregnated Silica Gel

100 g

197-11611

22% Sulfuric Acid-impregnated Silica Gel

100 g

194-11621

44% Sulfuric Acid-impregnated Silica Gel

100 g

191-11631

55% Sulfuric Acid-impregnated Silica Gel

100 g

197-13811

Sodium Sulfate

250 g

194-12221

Wakogel® DX

100 g

238-01781

Presep® Active Carbon-impregnated Silica Gel

Presep® Active Carbon-blended Silica Gel

62437.png 

Product Name

Package Size

Wako Cat. No.

Presep® Active Carbon-impregnated Silica Gel

10 each

293-41451

Presep® Active Carbon-blended Silica Gel

10 each

299-41551

Presep® Active Carbon-impregnated Silica Gel (Reverse Column)

62477.png 

Product Name

Package Size

Wako Cat. No.

Presep® Acitive Carbon-impregnated Silica Gel (Reverse Column)

5 each

297-43051

Examples of reagent blank of dioxins of active carbon silica gel

Dioxins

Active Carbon-impregnated Silica Gel

Active Carbon-blended

Silica Gel

T4CDDs

0.2 ↓

0.2 ↓

P5CDDs

0.2 ↓

0.2 ↓

H6CDDs

0.2 ↓

0.2 ↓

H7CDDs

0.5 ↓

0.5 ↓

O8CDD

2 ↓

2 ↓

T4CDFs

0.2 ↓

0.2 ↓

P5CDFs

0.2 ↓

0.2 ↓

H6CDFs

0.2 ↓

0.2 ↓

H7CDFs

0.5 ↓

0.5 ↓

OCDF

2 ↓

2 ↓

Dioxins

Active Carbon-impregnated Silica Gel

Active Carbon-blended

Silica Gel

3,4,4',5-T4CB(#81)

1 ↓

1 ↓

3,3',4,4'-T4CB(#77)

1 ↓

1 ↓

2,3',4,4',5-P5CB(#118)

1 ↓

1 ↓

2,3,4,4',5-P5CB(#114)

1 ↓

1 ↓

2,3,3',4,4'-P5CB(#105)

1 ↓

1 ↓

3,3',4,4',5-P5CB(#126)

1 ↓

1 ↓

2',3,4,4',5-P5CB(#123)

1 ↓

1 ↓

2,3',4,4',5,5'-H6CB(#167)

1 ↓

1 ↓

2,3,3',4,4',5-H6CB(#156)

1 ↓

1 ↓

2,3,3',4,4',5'-H6CB(#157)

1 ↓

1 ↓

3,3',4,4',5,5'-H6CB(#169)

1 ↓

1 ↓

 

Fractionation Performance Test

62620.png 

<Related Products>

Product Name

Use

Package Size

Wako Cat. No.

Presep® Column Adapter (TS15/25)

Part for connecting Presep® Multilayer Silica Gel and separating funnel with interchangeable ground joint

1 each

295-42251

Presep® Column Adapter (TS19/38)

1 each

299-45951

Presep® Column Adapter Packing

Refill Teflon packing (white) for Presep® Column Adapter

5 each

298-50051

Presep® Column Joint (TS15/25)

(1)Joint to be fitted on the sample elution side of Presep® Active Carbon-impregnated Silica Gel (Reverse Column)

(2)These joints are usable also as adapters on the eluent injection side by fitting a separating funnel with

interchangeable ground joint.

1 each

291-42851

Presep® Column Joint (TS19/38)

1 each

297-42951

Presep® Column Reducer (PTFE)

Connection of Presep® Active Carbon-impregnated Silica Gel (Reverse Column) and adapter on eluent injection side

1 each

295-42751

Presep® Cock Adapter

Adapter with cock to be fitted on sample elution side (under chromatographic column) of Presep® Multilayer Silica Gel.

1 each

299-42151

Presep® Cock Adapter Packing

Refill Teflon packing (brown) for Presep® Cock Adapter

5 each

294-50151

Presep® Cylinder Adapter (PTEE)

Connection of Luer Stop Valve and reservoir (solvent reservoir) in the case of use of Presep® Alumina, Activated DX, Presep® Active Carbonimpregnated Silica Gel or Presep® Active Carbon-blended Silica Gel

5 each

20 each

291-41751

297-41753

1-2.

Standard

2,2’,3-Trihydroxybiphenyl

 

Environmental pollution caused by dioxins has spread worldwide and has become a serious social issue.

Environmental dioxins can be degraded by heat or chemical treatments, but there is a demerit because the treatment of dioxins in soil or river sludge is very expensive.

Recently, degradation using microorganisms has been investigated as one of the dioxin treatments and the search for microorganisms using dioxins as a carbon source is being carried out.

This product is used for substrates of dioxin-degrading microorganisms.

 

Reaction pathway

62660.png 

Product Name

Package Size

Wako Cat. No.

2,2’,3-Trihydroxybiphenyl Standard

100 mg

208-15551

1-3.

Solvents for Dioxins Analysis

These products are used to determine Dibenzo-p-dioxins, Dibenzofurans, and Coplanar PCBs by high resolution
GC/MS, and ensures a sufficiently low concentration.

 

Product Name

Wako Cat. No.

Package Size

Specifications

 

Suitability for dioxins determination

(unit)

Acetone, 99.8+% (cGC)

010-17831

016-17833

1 L

3 L

Density (20℃): 0.789~0.792 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

pg/L

Dibenzofuran

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

Coplanar PCB

-

: ≤10

Decane, 99.5+% (cGC)

048-28543

042-28541

2 mL × 5

100 mL

Density (20℃): 0.727~0.735 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤10

: ≤50

fg/μL

Dibenzofuran

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤10

: ≤50

Coplanar PCB

-

: ≤10

Dichloromethane

[Methylene Chloride]

99.5+% (cGC, except MeOH)

Stabilizer: Methanol [0.2~0.5%]

048-26321

044-26323

1 L

3 L

Density (20℃): 1.320~1.331 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

pg/L

Dibenzofuran

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

Diethylene Glycol, 99.0+% (cGC)

040-28645

500 mL

Solubility in water: to pass test

Density (20℃): 1.116~1.123 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤5

: ≤25

pg/L

Dibenzofuran

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤5

: ≤25

Coplanar PCB

(2,3',4,4',5-PeCB)

(Other Co-PCB)

: ≤100

: ≤50

Diethyl Ether, 99.5+% (cGC)

049-27451

1 L

Density (20℃): 0.712~0.714 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

pg/L

Dibenzofuran

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

Ethanol (99.5), 99.5+% (cGC)

[Ethyl Alcohol (99.5)]

050-06661

056-06663

1 L

3 L

Density (20℃): 0.789~0.792 g/mL

Coplanar PCB

-

: ≤10

Fluorobenzene, 98.0+% (cGC)

061-04551

200 mL

Density (20℃): 1.025~1.035 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 7)

(Cl: 8)

: ≤5

: ≤10

fg/μL

Dibenzofuran

(Cl: 4 ~ 7)

(Cl: 8)

: ≤5

: ≤10

Coplanar PCB

-

: ≤5

Hexane, 96.0+% (cGC)

[n-Hexane]

083-07391

089-07393

1 L

3 L

Density (20℃): 0.658~0.662 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

pg/L

Dibenzofuran

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

Methanol, 99.8+% (cGC)

[Methyl Alcohol]

136-13461

132-13463

1 L

3 L

Density (20℃): 0.791~0.793 g/mL

Coplanar PCB

-

: ≤10

Nonane, 98.0+% (cGC)

[n-Nonane]

148-07351

142-07354

2 mL × 5

100 mL

Density (20℃): 0.713~0.721 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤5

: ≤10

fg/μL

Dibenzofuran

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤5

: ≤10

Coplanar PCB

-

: ≤5

Petroleum Ether

Content: 5~15 %

160-20231

1 L

Boiling range (30~60℃): 90+vol%

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

pg/L

Dibenzofuran

(Cl: 4 ~ 6)

(7, 8 chlorinated)

: ≤1

: ≤5

Coplanar PCB

-

: ≤10

10% Sodium Chloride Solution

192-12641

1 L

-

Dibenzo-p-dioxin

(Cl: 4)

(Cl: 5 or 6)

(Cl: 7 or 8)

: ≤1

: ≤2

: ≤5

pg/L

Dibenzofuran

(Cl: 4)

(Cl: 5 or 6)

(Cl: 7 or 8)

: ≤1

: ≤2

: ≤5

Coplanar PCB

-

: ≤5

Toluene, 99.7+% (cGC)

203-14141

209-14143

1 L

3 L

Density (20℃): 0.864~0.868 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

pg/L

Dibenzofuran

(Cl: 4 ~ 6)

(Cl: 7 or 8)

: ≤1

: ≤5

Coplanar PCB

-

: ≤10

Dimethyl Sulfoxide, 99.0+% (cGC)

041-29395

500 mL

Density (20℃):1.100 ~ 1.106 g/mL

Dibenzo-p-dioxin

(Cl: 4 ~ 7)

(Cl: 8)

: ≤5

: ≤10

fg/μL

Dibenzofuran

(Cl: 4 ~ 7)

(Cl: 8)

: ≤5

: ≤10

Coplanar PCB

-

: ≤5

 

<Related Products>

Product Name

Package Size

Wako Cat. No.

DIOXIN TRAP BEADS

200 g

040-27481

Active Carbon-impregnated Silica Gel

10 g

019-11941

Copper, Reduced, Granular, 300-850 µm (20-50 mesh)

50 g

032-19571

Phthalocyanine Immobilized Silica Gel

5 g

25 g

160-21831

168-21832

2.

PFCs Analysis

Presep®-C PFC (short)

Presep®-C PFC-II

 

Accumulation of perfluorocarbons in the body is a concern because of high lipid-solubility and degradation difficulty. Various environmental laboratories have examined analytical methods since it was listed as an item to be investigated by the Ministry of the Environment in fiscal 2002, in Japan.

 

62955.png 

Presep®-C PFC (short) and Presep®-C PFC-II are solid-phase extraction columns filled with a divinyl benzene-polymethacrylate resin-based filler. Presep® PFC-II is filled with a new polymer developed for the purpose of highly efficient recovery of wide range of PFCs. These columns are used as pretreatment columns for PFCs, such as perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS).

 

Features

1. Trace PFCs in water can be highly efficiently recovered. Presep® PFC-II can recover 16 PFCs.

2. 16 components can be analyzed simultaneously and quickly by combining with Wakopak® Wakosil-II 3C18 RS.

3. Blank caused by solvent can be reduced by combining with a solvent for PFOS or PFOA analysis.

 

PFCs additive recovery test

62963.png 

Chromatograms of PFCs additive recovery test (Presep® -C PFC (short))

62974.png 

LC/MS/MS measurement of PFCs

62979.png 

Solid-Phase Extraction Columns

Product Name

Package Size

Wako Cat. No.

Presep®-C PFC (Short)

10 each × 5

297-49651

Presep® PFC-II

10 each × 10

291-33441

<Related Products>

HPLC Column

Product Name

type, (W); Waters type

 

Size

Package Size

Wako Cat. No.

Wakopak® Wakosil-II3C18RS

2.0 mm × 150 mm (D)

2.0 mm × 150 mm (W)

1 unit

1 unit

236-50431

232-50433

(D); DuPont

Solvents

Product Name

Grade

Package Size

Wako Cat. No.

Ultrapure Water

for PFOS · PFOA Analysis

1 L

3 L

216-01361

212-01363

Acetonitrile

1 L

011-22251

Methanol

1 L

130-15941

Standards

Product Name

Grade

Package Size

Wako Cat. No.

Heptacosafluorotetradecanoic Acid Standard

for Environment Analysis

100 mg

080-08641

1H,1H,2H,2H-Henicosafluoro-1-dodecanol Standard

100 mg

080-08761

Heptafluorobutanoic Acid Standard

100 mg

087-08771

Heptadecafluorononanoic Acid Standard

100 mg

088-08681

Henicosafluoroundecanoic Acid Standard

100 mg

089-08611

Nonadecafluorodecanoic Acid Standard

100 mg

144-08551

Nonafluoropentanoic Acid Standard

100 mg

145-08581

Pentadecafluorooctanoic Acid Standard

500 mg

164-21851

Potassium Nonafluorobutanesulfonate Standard

100 mg

169-24341

Tricosafluorododecanoic Acid Standard

100 mg

204-17091

Tridecafluoroheptanoic Acid Standard

100 mg

209-17041

Undecafluorohexanoic Acid Standard

100 mg

212-01341

 

3.

Water Quality Testing

3-1.

Anionic Surfactant Analysis

Complies with the revised Water Works Law (in Japan)

With water quality criteria and test methods being revised, so did the anionic surfactant analysis method; it has changed from flow injection absorptiometry to high performance liquid chromatography. HPLC-fluorescence detection is adopted in the revised law. With this method, a column packed with silica gel, which is chemically modified with octadecylsilyl group (ODS column) or a column with equivalent quality to ODS column, is used as the separating column. According to this method, when analysis of water is carried out using Wakopak® Navi C18-5 (ODS column), numerous peaks may be detected.

On the other hand, the amount of anionic surfactant is prescribed a the total amount in the water quality criteria. Therefore, if these peaks are reduced, it improves the detectability and simplifies the quantitative calculation. Wakopak® Wakosil AS-Aqua is packed with the filler which recognizes the number of carbon atoms and not the branched condition, and is the best column for simple analysis of anionic surfactants.

According to the change in the analysis method, anionic surfactants of C10-C14 including branched alkyl chain are available as a reference standard. Presep®-C C18, solid-phase extraction column, is also available for pretreatment of samples. This column is hardly affected by the quality of water samples and good recovery results are obtained. The combined use of these products is recommended.

 

63099.png 

Sample Pretreatment

63107.png 

Analysis of standard solution for anionic surfactant test HPLC analysis conditions

63114.png 

Separation of anionic surfactant standard solutions and toluene

Although toluene may be contained in the extracted sample for measurement depending on the pretreatment method, toluene and anionic surfactant are separately eluted in analysis using Wakopak® Wakosil AS-Aqua. It ensures analysis without interference from toluene peak.

 

63120.png 

HPLC Columns / Eluent

Product Name

Size

Grade

Package Size

Wako Cat. No.

Wakopak® Wakosil AS-Aqua

4.6 mm × 250 mm (D)

4.6 mm × 250 mm (W)

-

1 unit

1 unit

234-63281

230-63283

Wakopak® Navi C18-5

4.6 mm × 250 mm (D)

4.6 mm × 250 mm (W)

-

1 unit

1 unit

235-60531

231-60533

Wakosil® AS-Aqua Eluent

 

for HPLC

1 L

238-02261

 

Solid-Phase Extraction Columns

Product Name

Amount of filler

(mg / cartridge)

Grade

Package Size

Wako Cat. No.

Presep®-C C18 (ODS)

900

for Sample Pretreatment

10 each × 5

292-32251

Presep®-C C18 (ODS) (Short)

470

10 each × 5

297-47451

Presep® Agri

500 / 6 mL

for Pesticide Residue Analysis

50 each

291-26851

Presep®-C Agri (Short)

220

10 each × 5

296-32651

 

<Related Products>

Standards, Standard Solutions

Product Name

Grade

Package Size

Wako Cat. No.

Anionic Surfactants Mixture Standard Solution

for Water Analysis

1 mL × 5A

013-20131

Sodium Decylbenzenesulfonate Standard Solution

1 mL × 5A

195-13111

Sodium Undecylbenzenesulfonate Standard Solution

1 mL × 5A

192-13121

Sodium Dodecylbenzenesulfonate Standard Solution

1 mL × 5A

199-13131

Sodium Tridecylbenzenesulfonate Standard Solution

1 mL × 5A

196-13141

Sodium Tetradecylbenzenesulfonate Standard Solution

1 mL × 5A

193-13151

Sodium p-n-Octylbenzenesulfonate Standard

100 mg

194-17101

Sodium p-n-Octylbenzenesulfonate Standard Solution

1 mL

195-17131

Solvents (for LC / MS, for HPLC )

Product Name

Grade

Package Size

Wako Cat. No.

Formic Acid (abt.99%)

for HPLC

25 mL

063-04192

Formic Acid (abt.99%)

for LC/MS

1 mL × 5A

50 mL

063-04533

067-04531

0.1vol% Formic Acid-Acetonitrile

for LC/MS

1 L

3 L

062-04721

068-04723

Acetonitrile

for HPLC

1 L

3 L

019-08631

015-08633

Acetonitrile

for LC/MS

100 mL

1 L

3 L

016-19854

012-19851

018-19853

Methanol

for HPLC

1 L

3 L

138-06473

132-06471

Methanol

for LC/MS

100 mL

1 L

3 L

132-14524

138-14521

134-14523

Distilled Water

for HPLC

1 L

3 L

046-16971

042-16973

Ultrapure Water

for LC/MS

1 L

3 L

214-01301

210-01303

3-2.

Standards

Nonylphenol standards

Nonylphenol is an endocrine disruptor.

Addition of nonylphenol to environmental standards designed for protection of aquatic organisms (as part of Standards based on the Basic Environment Law for Protection of Living Environment Related to Water Pollution (Japan)) is currently being discussed. “Solid-phase GC-MS” that can perform isomer-specific measurement is being considered as an analysis technique recommended by the standards.

 

Product Name

Grade

Package Size

Wako Cat. No.

Nonylphenol (mixture of isomers)

for Environment Analysis

100 mg

148-09291

p-n-Nonylphenol Standard

500 mg

146-06791

<Related Products>

Product Name

Grade

Package Size

Wako Cat. No.

Acetone 5,000

for Pesticide Residue & PCB Analysis

1 L

3 L

011-19201

017-19203

Dichloromethane 5,000

1 L

3 L

043-28451

049-28453

Hexane 5,000

1 L

3 L

083-07911

089-07393

Sodium Sulfate

500 g

197-07125

Linear Alkylbenzene Sulfonic acids and their salts (LAS)

The Ministry of the Environment has issued their second reports on additional items for environmental regulation of water quality to protect aquatic organisms. (in Japan)

In this reports, the Ministry has announced that they are currently discussing adding environmental measures for linear alkylbenzene sulfonic acids and their salts (LAS), in light of new data demonstrating the toxicity of these line of compounds.

Qualitative HPLC analysis has been proposed as the primary method of me, asuring LAS, and this product can be used as an internal standard for such studies.

 

Example of analysis of Sodium p-n-Octylbenzenesulfonate

63126.png 

Standards

Product Name

Grade

Package Size

Wako Cat. No.

Anionic Surfactants Mixture Standard Solution

for Water Analysis

1 mL × 5A

013-20131

Sodium p-n-Octylbenzenesulfonate Standard

100 mg

194-17101

Sodium p-n-Octylbenzenesulfonate Standard Solution

1 mL

195-17131

Analytical Columns

Product Name

Size

Package Size

Wako Cat. No.

Wakopak® Wakosil AS-Aqua

4.6 mm × 250 mm (D)

4.6 mm × 250 mm (W)

1 unit

1 unit

234-63281

230-63283

Wakopak® Navi C18-5

4.6 mm × 250 mm (D)

4.6 mm × 250 mm (W)

1 unit

1 unit

235-60531

231-60533

Aniline

Standard

Product Name

Assay

Package Size

Wako Cat. No.

Aniline

99.0+% (Titration)

100 mL

500 mL

019-03991

019-03996

p-(1,1,3,3-Tetramethylbutyl)phenol (4-tert-Octylphenol)

Standard

Product Name

Grade

Package Size

Wako Cat. No.

p-(1,1,3,3-Tetramethylbutyl)phenol Standard

for Environment Analysis

500 mg

208-14451

2,4-Dichlorophenol

Standard

Product Name

Grade

Package Size

Wako Cat. No.

2,4-Dichlorophenol Standard

for Environment Analysis

500 mg

049-26611

 

3-3.

Musty-Odor Standard Analysis

Geosmin and 2-Methylisoborneol

The moldy odor produced by environmental pollution in rivers and lakes is due to metabolic products of various abnormally proliferated actinomyces and algae. Geosmin in particular is considered to be most responsible for offensive odors in tap water because it has a strong earthy odor (or moldy odor) in a trace amount. It is used as a reference standard for analysis of geosmin.

 

Standards

Product Name

Grade

Package Size

Wako Cat. No.

Geosmin Standard

for Water Analysis

20 mg

077-01911

Geosmin Standard Solution

(0.1mg/ml Methanol Solution)

1 mL

072-03421

2-Methylisoborneol Standard

20 mg

132-07071

2-Methylisoborneol Standard Solution

(0.1mg/ml Methanol Solution)

1 mL

134-10581

2-Methylisoborneol-Geosmin Mixture Standard Solution

(each 0.1mg/ml Methanol Solution)

1 mL

131-12431

<Related Products>

Product Name

Note

Package Size

Wako Cat. No.

2,4,6-Trichloroanisole Standard

for Water Analysis

100 mg

209-18901

Sodium Chloride

500 g

192-10745

Sodium Azide

98.0+% (Titration)

25 g

195-11092

Presep®-C C18 (ODS)

for Sample Pretreatment

10 each × 5

292-32251

4.

Food Analysis

4-1.

Melamine Standards

Melamine occurs as monoclinic crystals and is used mainly as a raw material of melamine resin for decorative sheet, molded plateware, molded machines and electric parts, baking paint, and textile processing agent.

After the case of melamine contamination in pet foods in the U.S. in 2007, the Ministry of Health, Labour and Welfare has instructed to perform a monitoring test for proteins (including gluten) made from rice from China and wheat and for flour and powder prepared using flour.

 

Structural Formula

63150.png 

Standards of Melamine and the related compounds

Product Name

Grade

Package Size

Wako Cat. No.

Melamine Standard

for Food Analysis

100 mg

132-15881

Isocyanuric Acid Standard

for HPLC

200 mg

091-05311

Ammeline Standard

for Food Analysis

100 mg

012-22041

Ammelide Standard

100 mg

019-22051

<Related Products>

Product Name

Size

Note

Package Size

Wako Cat. No.

Wakopak® Wakosil 5NH2

4.6 mm × 250 mm (D)

4.6 mm × 250 mm (W)

-

1 unit

1 unit

238-57691

234-57693

Diethylamine

-

99.0+% (cGC)

25 mL

500 mL

047-01773

041-01776

Pyridine, Dehydrated

-

99.5+% (cGC)

100 mL

500 mL

161-18453

167-18455

Distilled Water

-

-

500 mL

2 L

043-16785

047-16783

Acetonitrile 300

-

for Pesticide Residue

& PCB Analysis

1 L

3 L

015-11301

011-11303

2,4-Diamino-6-chloropyrimidine

-

98.0+% (Titration)

25 g

100 g

043-22432

045-22431

4-2.

A Clean up of Aflatoxins

AFLAKING manufactured by HORIBA, Ltd. (Kyoto, Japan) has been developed to extract aflatoxin from food such as nuts, grain and spices.

AFLAKING is an immunoaffinity column developed for cleanup of aflatoxins from food. With conventional immunoaffinity columns, it was required to dilute organic solvent extracts to 2 % or so, and, as the result of this, turbidity was caused, and analysis of spices, etc. was difficult. AFLAKING is resistant to the solvents of 20 % acetonitrile and 40 % methanol which are widely used for extraction and ensures easy and quick cleanup of a wide range of food, such as nuts, cereals and spices.

It can clean up aflatoxins B1, B2, G1 and G2 simultaneously. In addition, it can clean up aflatoxin M1. (M1 recovery: 87 %) It conforms to Notice No. 0728004 of Pharmaceutical and Food Safety Bureau of the Ministry of Health, Labour and Welfare.

16_1.psd 

High resistance to organic solvents

63215.png 

Recovery

63221.png 

Product Name

Package Size

Wako Cat. No.

AFLAKING 25

25 unit

308-34201

AFLAKING 50

50 unit

304-34203

 

5.

Biocide

Dimethylfumarate (DMF) Standard

As of 1 May 2009 products containing a biocide Dimethylfumarate are prohibited from being placed or made available on the European communities market.

Since 2007, sofas exported to the UK from China which contained dimethylfumarate (DMF), a biocide preventing moulds that may deteriorate leather furniture or footwear during storage or transport in a humid climate have caused dermatitis in consumers who have been in contact with these sofas.

Number of victims: several thousand (in the UK, France, Poland, Finland, Sweden, etc.)

DMF was most often contained in little pouches fixed inside the furniture or added to the footwear boxes. It thus evaporated and impregnated the product, protecting it from moulds. However, it then also affected consumers who were in contact with the products. DMF penetrated through the clothes onto consumers’ skin where it caused painful skin contact dermatitis, including itching, irritation redness, and burns; in some cases, acute respiratory troubles are reported. The dermatitis was particularly difficult to treat. The presence of DMF is thus a serious risk.

Method’s Quantification Limit (MQL): 0.1 mg/kg of the weight of the product or part of the product.

 

Specification

Appearance: White, Crystals ~ crystalline powder
Solubility in acetone: to pass test
Melting Point: 101 ~ 105℃
Assay (cGC) : 99.0+%

Description

Grade

Package Size

Wako Cat. No.

Dimethyl Fumarate Standard, 99.0+% (cGC)

[IUPAC Name] Dimethyl (E)-butenedioate

[CAS No.] 624-49-7; [Einecs No.] 210-849-0

[Molecular Weight] 144.13

[Molecular Formula] CH3OCOCH:CHCOOCH3

for Household Articles Test

100 mg

041-31061

Reference: The EU regulation

http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2009:074:0032:0034:EN:PD

 

eReagent_add.psd 

6.

Metal Standard Solutions

Metal Standard Solutions / JCSS

Wako has been qualified as an institution for calibration (a licensed trader) of standard pH solutions, standard metal solutions and standard ion solutions by the Minister of Economy, Trade and Industry in Japan and offers the standard solutions traceable according to the National Metrology Standard. These products are provided with a calibration certificate marked with JCSS to certify that it is traceable according to the National Metrology Standard and, at the same time, attests to the supply of accurate and highly reliable reagent.

 

Product Name

Concentration (mg / L)

Solvent

Package Size

Wako Cat. No.

Aluminium Standard Solution (Al 100)

100

HNO3

100 mL

016-18271

Aluminium Standard Solution (Al 1000)

1,000

HNO3

100 mL

016-15471

Antimony Standard Solution (Sb 100)

100

HCl

100 mL

013-18281

Antimony Standard Solution (Sb 1000)

1,000

HCl

100 mL

010-15491

Arsenic Standard Solution (As 100)

100

HNO3 in Water,

pH 5.0 with HCl

100 mL

013-15501

Arsenic Standard Solution (As 1000)

1,000

100 mL

013-15481

Barium Standard Solution (Ba 1000)

1,000

HNO3

100 mL

027-15321

Bismuth Standard Solution (Bi 100)

100

HNO3

100 mL

023-14201

Bismuth Standard Solution (Bi 1000)

1,000

HNO3

100 mL

021-12661

Boron Standard Solution(B 1000)

1,000

Water

100 mL

025-16581

Cadmium Standard Solution (Cd 100)

100

HNO3

100 mL

030-16211

Cadmium Standard Solution (Cd 1000)

1,000

HNO3

100 mL

036-16171

Calcium Standard Solution (Ca 100)

100

HNO3

100 mL

036-17891

Calcium Standard Solution (Ca 1000)

1,000

HNO3

100 mL

039-16161

Cesium Standard Solution(Cs 1000)

1,000

Water

100 mL

030-21341

Chromium Standard Solution (Cr 100)

100

HNO3

100 mL

037-16221

Chromium Standard Solution (Cr 1000)

1,000

HNO3

100 mL

030-16191

Cobalt Standard Solution (Co 100)

100

HNO3

100 mL

039-17901

Cobalt Standard Solution (Co 1000)

1,000

HNO3

100 mL

033-16181

Copper Standard Solution (Cu 100)

100

HNO3

100 mL

034-16231

Copper Standard Solution (Cu 1000)

1,000

HNO3

100 mL

033-16201

Gallium Standard Solution (Ga 1000)

1,000

HNO3

100 mL

070-05781

Indium Standard Solution (In 1000)

1,000

HNO3

100 mL

092-05841

Iron Standard Solution (Fe 100)

100

HNO3

100 mL

091-03851

Iron Standard Solution (Fe 1000)

1,000

HNO3

100 mL

094-03841

Lead Standard Solution (Pb 100)

100

HNO3

100 mL

127-04301

Lead Standard Solution (Pb 1000)

1,000

HNO3

100 mL

124-04291

Lithium Standard Solution (Li 1000)

1,000

HNO3

100 mL

129-05221

Magnesium Standard Solution (Mg 100)

100

HNO3

100 mL

136-13601

Magnesium Standard Solution (Mg 1000)

1,000

HNO3

100 mL

136-12121

Manganese Standard Solution (Mn 100)

100

HNO3

100 mL

139-12111

Manganese Standard Solution (Mn 1000)

1,000

HNO3

100 mL

133-12131

Molybdenum Standard Solution (Mo 1000)

1,000

HCl · HNO3

100 mL

130-14961

Nickel Standard Solution (Ni 100)

100

HNO3

100 mL

144-06471

Nickel Standard Solution (Ni 1000)

1,000

HNO3

100 mL

147-06461

Potassium Standard Solution (K 100)

100

Water

100 mL

162-19941

Potassium Standard Solution (K 1000)

1,000

Water

100 mL

165-17471

Rubidium Standard Solution (Rb 1000)

1,000

Water

100 mL

188-01951

Selenium Standard Solution (Se 1000)

1,000

HNO3

100 mL

192-13861

Sodium Standard Solution (Na 100)

100

Water

100 mL

191-12111

Sodium Standard Solution (Na 1000)

1,000

Water

100 mL

199-10831

Strontium Standard Solution (Sr 1000)

1,000

HNO3

100 mL

199-13871

Tellurium Standard Solution (Te 1000)

1,000

HCl

100 mL

209-17921

Thallium Standard Solution (Tl 1000)

1,000

HNO3

100 mL

205-16301

Tin Standard Solution (Sn 1000)

1,000

HCl

100 mL

202-16311

Vanadium Standard Solution (V 1000)

1,000

HCl · HNO3

100 mL

221-01851

Zinc Standard Solution (Zn 100)

100

HNO3

100 mL

261-01431

Zinc Standard Solution (Zn 1000)

1,000

HNO3

100 mL

264-01421

7.

Solvents

7-1.

for Pesticide Residue and PCB Analysis

These products ensure safety as each contains no interfering substances in the 300-fold or 5000-fold concentrated solution, and are ideal for the extraction of pesticides from the test substances and for purification.

 

Suitability for Pesticide Residue and PCB Analysis

The 300- and 5000-fold concentrated solution guarantee the followings :

1 With the GC-ECD, the level of impurities does not exceed 1/2 of the peak of the organochlorine pesticide γ-BHC (20pg).

2 With GC-FPC, the level of impurities does not exceed 1/25 of the peak of the organophosphorous pesticide MPP (0.5ng)

Product Name

Grade

Package Size

Wako Cat. No.

Acetone 300

for Pesticide Residue

& PCB Analysis

1 L

3 L

015-11281

011-11283

Acetone 5,000

1 L

3 L

011-19201

017-19203

Acetonitrile 300

1 L

3 L

015-11301

011-11303

Acetonitrile 5,000

1 L

3 L

013-19401

019-19403

Acetonitrile

for Tiuram Analysis

1 L

3 L

011-15281

017-15283

Benzene 300

for Pesticide Residue

& PCB Analysis

1 L

021-08631

Benzene 5,000

1 L

028-14751

t-Butyl Methyl Ether 300

1 L

024-14351

t-Butyl Methyl Ether 5,000

1 L

020-14831

Chloroform 300

1 L

039-11801

Chloroform 5,000

1 L

033-18641

Cyclohexane 300

1 L

3 L

038-16751

034-16753

Cyclohexane 5,000

1 L

036-18631

Dichloromethane 300

1 L

3 L

133-08841

139-08843

Dichloromethane 5,000

1 L

3 L

043-28451

049-28453

Dichloromethane 5,000, 2-Methyl-2-butene added

1 L

042-30011

Diethyl Ether 300

1 L

050-04461

Diethyl Ether 5000

1 L

040-28461

Distilled Water, Hexane Washed

-

1 L

3 L

040-28081

046-28083

Ethanol 300

for Pesticide Residue

& PCB Analysis

1 L

3 L

056-04441

052-04443

Ethanol 5,000

1 L

053-07011

Ethyl Acetate 300

1 L

3 L

052-04421

058-04423

Ethyl Acetate 5,000

1 L

3 L

052-06981

058-06983

Hexane 300

1 L

3 L

084-04761

080-04763

Hexane 5,000

1 L

3 L

083-07911

089-07913

Methanol 300

1 L

3 L

139-08821

135-08823

Methanol 5,000

1 L

3 L

132-14161

138-14163

Petroleum Ether 300

1 L

165-12971

Petroleum Ether 5,000

1 L

162-20671

Toluene 300

1 L

3 L

203-11601

209-11603

Toluene 5,000

1 L

3 L

209-15581

205-15583

7-2.

for LC/MS

Liquid chromatography - mass spectrometry (LC/MS) is widely used in various fields including biological, food, and environmental analyses. In particular, recent breakthroughs in the development and upgrades of device interfaces have led to the use of LC/MS in microanalyses of environmental pollutants and chemical metabolites, etc. Following products are ideal LC/MS reagents to analyze trace components.

 

Product Name

Features

Specifications

Package Size

Wako Cat. No.

Acetic Acid

·Suitability test for LC/MS analysis performed

·Reduced background noise

Assay (HPLC): 99.5+%

Absorbance (1 4,250 nm): max. 0.50

Absorbance (1 4,254 nm): max. 0.10

Fluorescence test: to pass test

Suitability for LC/MS analysis: to pass test

1 mL × 5A

50 mL

014-20063

018-20061

Acetonitrile

·Suitability test for LC/MS analysis performed

·Guarantees noise level at

m/z 50~2,000

·Use of aluminum caps

Reduced risks of slight amounts of

contaminants from plastic caps.

Assay (cGC): 99.8+%

Density (20°C): 0.780 ~ 0.783 g/mL

Fluorescence test: to pass test

Suitability for LC/MS analysis: to pass test

100 mL

1 L

3 L

016-19854

012-19851

018-19853

Formic Acid

(abt. 99%)

·Suitability test for LC/MS analysis performed

·Reduced background noise

Assay (HPLC): 99.5+%

Solubility in water: to pass test

Absorbance (1 4,254 nm): max.1.00

Fluorescence test: to pass test

Suitability for LC/MS analysis: to pass test

1 mL × 5A

50 mL

063-04533

067-04531

0.1vol% Formic Acid-Acetonitrile

·Suitability test for LC/MS analysis performed

·Ready-to-Use eluent

Absorbance (200-400 nm): to pass test

Fluorescence test: to pass test

Water: max. 0.05%

1 L

3 L

062-04721

068-04723

Methanol

·Suitability test for LC/MS analysis performed

·Guarantees noise level at

m/z 50~2,000

·Use of aluminum caps

Reduced risks of slight amounts of

contaminants from plastic caps

Assay (cGC): 99.7+%

Density (20°C): 0.789~0.792 g/mL

Fluorescence test: to pass test

Suitability for LC/MS analysis: to pass test

100 mL

1 L

3 L

132-14524

138-14521

134-14523

2-Propanol

·Suitability test for LC/MS analysis performed

99.7+% (Capillary GC)

Density (20°C): 0.784~0.787 g/mL

Fluorescence test: to pass test

Suitability for LC/MS analysis: to pass test

1 L

3 L

168-25531

164-25533

Ultrapure Water

·Decreased total organic carbon levels

·Guarantees the absorbance and fluorescence tests

·Use of specially processed glass containers / aluminum caps

Density (20°C): 0.997 ~ 0.999 g/mL

Refractive index nD20: 1.332 ~ 1.334

Absorbance (210~400 nm): max. 0.01

Fluorescence test: to pass test

Total organic carbon (TOC): max. 4 ppb

1 L

3 L

214-01301

210-01303

7-3.

for HPLC

Followings are high purity HPLC solvents. For improved reproducibility and detection sensitivity of chromatography, the stability of the analyte, stability of the mobile phase, clogging in the line and filter, sensitivity and stability of the detector have been considered, and the products have guaranteed quality with respect to change in refractive index due to water, peroxides, nonvolatile matters, or impurities in the solvent, UV absorption, and fluorescent substances, etc.

 

Product Name

Package Size

Wako Cat. No.

Acetone

1 L

3 L

014-08681

010-08683

Acetonitrile

1 L

3 L

019-08631

015-08633

Benzene

1 L

025-06691

1-Butanol

1 L

023-10801

t-Butyl Methyl Ether

1 L

024-12771

Chloroform

1 L

3 L

033-08631

039-08633

Chloroform, Amylene added

1 L

3 L

031-20531

037-20533

Cyclohexane

1 L

3 L

033-08511

039-08513

o-Dichlorobenzene

1 L

046-18671

Dichloromethane

1 L

3 L

136-06751

132-06753

N,N-Dimethylformamide

1 L

3 L

042-20621

048-20623

1,4-Dioxane

1 L

042-16691

Distilled Water

1 L

3 L

046-16971

042-16973

Ethanol (99.5)

1 L

3 L

056-03341

052-03343

Ethyl Acetate

1 L

3 L

057-03371

053-03373

Heptane

1 L

085-03691

1,1,1,3,3,3-Hexafluoro-2-propanol

100 mL

500 mL

085-06991

087-06995

Hexane

1 L

3 L

084-03421

080-03423

Methanol

1 L

3 L

138-06473

132-06471

1-Propanol

1 L

162-13461

2-Propanol

1 L

3 L

165-09161

161-09163

Tetrahydrofuran, with Stabilizer

1 L

3 L

200-19391

206-19393

Tetrahydrofuran, Stabilizer Free

1 L

3 L

209-06811

205-06813

Toluene

1 L

209-06791

0.1 vol% Trifluoroacetic Acid - Acetonitrile

1 L

3 L

206-16451

202-16453

2,2,4-Trimethylpentane

1 L

207-06731

1-Methyl-2-pyrrolidone

1 L

130-17641

Solvents and pH Adjusting Reagents

Product Name

Package Size

Wako Cat. No.

Acetic Acid

25 mL

010-19112

Formic Acid (abt. 99%)

25 mL

063-04192

Phosphoric Acid

25 mL

162-20492

Trifluoroacetic Acid

1 mL × 5A

5 mL × 5A

206-10731

206-10736

Eluents for HPLC Analysis

Product Name

Package Size

Wako Cat. No.

1 mol/L Ammonium Formate Solution

100 mL

011-21031

1 mol/L Ammonium Dihydrogenphosphate Solution

100 mL

015-21051

1 mol/L Ammonium Acetate Solution

100 mL

018-21041

0.25 mol/L Potassium Dihydrogenphosphate Solution

500 mL

168-19965

0.25 mol/L Sodium Dihydrogenphosphate Solution

500 mL

197-12135

8.

Pretreatment Columns -Presep® Series

The solid-phase extraction method for pretreatment of samples is used widely in various fields, including pharmaceutical, food and environmental analyses, because the method is simple and uses smaller amounts of solvents. In addition, the method has various advantages, for example, it can treat many samples simultaneously in a short time.

Presep® series are categorized by their shapes; one is “Presep®-C type” which has a cartridge shape with closed both ends, the other is “Presep® syringe type” with one open and one closed ends.

 

63252.png 

Features

1. The columns can be used for solid-phase extraction by any of the compression and decompression methods.

(Presep®-C Type)

2. Some columns can be connected depending on the kind and amount of filler. (Presep®-C Type)

3. High flow velocity obtained by the sharp filler particle size distribution.

4. High recovery realized by the fillers designed for solidphase extraction.

5. High reproducibility ensured by strict quality control.

 

List of Fillers

Kind

Filler

Particle size (μm)

Uses and characteristics

C18 (ODS)

C18(ODS)-bonded silica gel

63 ~ 212

Reversed phase partition : Separation of hydrophobic substances in water-soluble samples

NH2

Aminopropylsilanized silica gel

38 ~ 63

Removal of acidic compounds, such as organic acids and fatty acids

Silica gel

Crushed silica gel

75 ~ 150

Normal phase adsorption: Separation of low- to medium-polarity components from nonaqueous solutions

Alumina

Basic (pH 9) alumina

44 ~ 149

Removal of interfering substances from pesticides and environment samples

Florisil®

MgO3Si

75 ~ 150

Removal of lipid and pretreatment of pesticide residue in food

Na2SO4

Sodium sulfate (anhydrous)

-

Dehydration

Diatomaceous Earth, Granular

Granular diatomaceous earth

500 ~ 1400

Desolventization

Polyamide C-200

Polyamide resin

75 ~ 150

Pretreatment of paeoniflorin in Kakkonto extract

RPP

Styrene-divinylbenzene-methacrylate polymer

30, 60

Trapping of high-polarity substances which cannot be adsorbed by normal ODS Pretreatment of biological samples

RPP-SAX

Divinylbenzne-methacrylate polymer anion-exchange group bonding

40 ~ 48

Selective extraction of acidic compounds and extraction of drug products and their metabolites from biological samples (urine and blood)

RPP-WAX

60

DEA

Diethylaminoethyl Cl type

45 ~ 90

Polymer-based weakly basic anion exchange

QA

Trimethylaminoethyl Cl type

Polymer-based strongly basic anion exchange

CM

Carboxymethyl Na type

Polymer-based weakly acidic cation exchange

S

Sulfonyl propyl Na type

Polymer-based strongly acidic cation exchange

PFC/PFC-

Divinylbenzene-methacrylate polymer

50

Pretreatment for analysis of organofluorine compounds (PFCs)

Agri

Styrene-divinylbenzene-methacrylate polymer

50

Trapping of high-polarity substances which cannot be adsorbed by normal ODS Pretreatment for analysis of pesticide residue

DNPH

Silica gel coated with 2,4-dinitrophenylhydradine

Short:150 ~ 450

Long:75 ~ 150

Derivatization after adsorption of aldehydes and ketones

Ozone scrubber

High-purity potassium iodine

-

Removal of ozone

Multilayer silica gel

10% silver nitrate-silica gel, 22% sulfate silica gel, etc.

-

Pretreatment for analysis of dioxins

Activated carbon-blended silica gel

Activated carbon-blended silica gel

Activated carbon-impregnated silica gel

Activated carbon-impregnated silica gel

PolyChelate

Chelate resin modified with

carboxymethylated polyethylenimine.

-

Trapping of metal elements

Dehydration

Hydrophobic Teflon membrane filter

-

Dehydration

 

Presep® Series ; Solid-Phase Extraction Columns

Product Name

Amount of filler

(mg/cartridge)

Use

Package Size

Wako Cat. No.

Presep® (Luer Lock) Polyamide C-200 Type M

2000 / 25 mL

for Sample Pretreatment (crude drug)

10 each × 5

298-33571

Presep®-C C18 (ODS) (Short)

470

for Sample Pretreatment

10 each × 5

297-47451

Presep®-C C18 (ODS)

900

10 each × 5

292-32251

Presep® C18 (ODS)

2000 / 25 mL

100 each

296-34091

Presep® C18 (ODS) Type M

5000 / 25 mL

20 each

100 each

293-48553

297-48556

Presep®-C NH2 (Short)

400

10 each × 5

299-48751

Presep®-C NH2

820

10 each × 5

295-48851

Presep®-C Silica Gel

800

50 each

294-31851

Presep®-C Alumina

1700

10 each × 5

290-32051

Presep®-C Florisil®

800

10 each × 5

290-31951

Presep® Florisil

1000 / 6 mL

10 each × 5

291-44051

Presep®-C Na2SO4

2300

10 each × 5

296-32151

Presep® Diatomaceous Earth, Granular

1000 / 6 mL

2000 / 15 mL

100 each

100 each

292-35051

298-35151

Presep® (Luer Lock) Diatomaceous Earth,

Granular Type M

4500 / 25 mL

100 each

291-33561

Presep®-C RPP (Short)

190

10 each × 5

297-41851

Presep®-C RPP (Long)

360

10 each × 3

293-41951

Presep® RPP

60 / 3 mL

200 / 6 mL

500 / 6 mL

10 each × 5

10 each × 5

10 each × 5

294-36851

290-36951

290-37051

Presep® RPP-SAX

60 / 3 mL

10 each × 10

297-33301

Presep® RPP-WAX

60 / 3 mL

10 each × 10

291-33941

Presep® DEA

250 / 6 mL

10 each × 5

292-61701

Presep® QA

250 / 6 mL

10 each × 5

296-61601

Presep® CM

250 / 6 mL

10 each × 5

298-61801

Presep® S

250 / 6 mL

10 each × 5

294-61901

Presep® PFC-II

60 / 3 mL

for Sample Pretreatment (PFCs)

10 each × 10

291-33441

Presep®-C PFC (Short)

220

10 each × 5

297-49651

Presep®-C Agri (Short)

220

for Pesticide Residue Analysis

10 each × 5

296-32651

Presep®-Agri

500 / 6 mL

50 each

291-26851

Presep®-C DNPH (Short)

400

for Collection of Aldehydes

20 each

291-43951

Presep®-C DNPH

800

20 each

290-34251

Presep®-C Ozone Scrubber

1300

20 each

293-40351

Presep® Multilayer Silica Gel

 

for Dioxins Analysis

5 each

295-41651

Presep® Active Carbon-impregnated Silica Gel

1000

10 each

293-41451

Presep® Acitive Carbon-impregnated Silica Gel

(Reverse Column)

1000

5 each

297-43051

Presep® PolyChelate

250 / 3 mL

for Trapping of Metal Elements

10 each × 5

296-33491

Presep® Dehydration, 48WELL PLATE

3 mL

for Organic Synthesis

10 each

299-44351

9.

High-sealed Storage Bottles

There high-performance hermetic container are ideal for storing volatile solvents, agrochemicals, dioxins, and other types of standard solutions. Specially designed to be completely airtight, the Perfluoro O-ring between the mouth and the cap ensures preventing swelling of the container affected by expansion and contraction due to temperature fluctuations and organic solvent vaporization. This enables long storage of various types of solvents at temperatures between ambient (room temperature) and the freezer (-20°C).

21_2.psd 

Features

Applications

63277.png 

Product Name

Bottle Size

Package Size

Wako Cat. No.

High-sealed Storage Bottle, Brown

1 mL

2 mL

5 mL

10 mL

1 bottle

1 bottle

1 bottle

1 bottle

296-34731

293-34741

297-34761

294-34771

63328.png