VWR International - Chemicals and Laboratory Scientific Supplies

4-Chlorophenol, Sigma-Aldrich®

Description: 4-Chlorophenol for synthesis, CAS number 106-48-9, Chemical formula 4-(Cl)C6H4OH, Synonyms 4-Chloro-1-hydroxybenzene

Catalog Number: EM8.02254.9025

Supplier: MilliporeSigma

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Calcium Standard, Titrisol®, MilliporeSigma

Description: CaCl₂ in 6,5% hydrochloric acid

Catalog Number: EM1.09943.0001

Supplier: MilliporeSigma

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Barium sulfate for white standard DIN 5033 (Blanc fixe), Supelco®

Catalog Number: EM1.01748.0250

Supplier: MilliporeSigma

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N,N-Dimethylformamide, Uvasol® for spectroscopy, Supelco®

Description: Accurate analytic results in UV/VIS and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol® solvents range has been specially designed for spectroscopy and other applications requiring solvents of the highest spectral purity. The refinement process allows a greater degree of security in applications and avoids misinterpretation of analytical results caused by traces of UV, IR and fluorescence contamination. Uvasol® solvents offer best UV transmittance. In all specifications the minimum transmittance for 5 typical wavelengths are identified. Furthermore the transmittance is specified in accordance with Reag. Ph Eur and ACS.

Catalog Number: EM1.02937.2500

Supplier: MilliporeSigma

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(1-Butyl)triphenylphosphonium chloride for synthesis, Sigma-Aldrich®

Description: Butyltriphenylphosphonium chloride for synthesis, CAS number 13371-17-0, Chemical formula (C6H5)3P?C4H9Cl?, Synonyms Triphenylbutylphosphonium chloride

Catalog Number: EM8.14141.0010

Supplier: MilliporeSigma

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5-Fluorouracil for synthesis, Sigma-Aldrich®

Catalog Number: EM8.18505.0005

Supplier: MilliporeSigma

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Supelco® Reflectoquant® Chlorine Test, MilliporeSigma

Description: The Reflectoquant Chlorine test includes test strips and all necessary additional reagents and is a rapid exploratory test for free chlorine and intended primarily for checking the use of chlorinated disinfectants. Chlorine containing disinfectants are most widely used. They are applied particularly to disinfect drinking water and swimming pool water. On the test strip, chlorine oxidizes an organic compound to a violet dye that is determined reflectometrically on the RQflex. For pre-testing a sample in an economic and quick way to estimate the chlorine concentration and a possible dilution factor prior to using this quantitative method we recommend our semi-quantitative MQuant test strips for chlorine. Further quantitative determination methods can be found with our Spectroquant tests.

Catalog Number: EM1.16896.0001

Supplier: MilliporeSigma

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