Chromium test paper Pack of 200 strips 20x70 mm
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Chromium test paper Pack of 200 strips 20x70 mm

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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Artikelnummer 90724
Antal / pakning 200
Instrumentläsning No
Typ Chromium