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Rp 636.900

Dilihat : 4288 kali Beli

Quick and easy determination of chromate

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This test paper allows the quick and easy detection of Chromate (CrO43-). Cr(III) ions must be converted to chromate prior to the detection. 
For non-destructive testing of materials apply a drop of acid solution (1 part hydrochloric acid 37 % + 4 parts hydrogen peroxide 3 %) to the degreased surface. After 10-30 seconds add a drop sodiumhydroxyde (NaOH). Press the test paper onto the precipitate then put it into diluted sulfuric acid. In the presence of chromium, a violet spot appears. With this procedure Chromium contents >0,1% are safely detected. 

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Product data and ordering information
Type Qualitative test paper
Presentation  Pack of 200 strips 20x70 mm
Color reaction

white to violet

Limit of sensitivity 2 mg/l Cr3+ or 5 mg/l CrO42–
Reference 907 24

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