Chromium test paper *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING (see Quantofix Chromate 91301 as an alternative)  *Additional reagents are required to perform this test, they are not included with this item* #90724

Chromium test paper *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING (see Quantofix Chromate 91301 as an alternative) *Additional reagents are required to perform this test, they are not included with this item*


Item#: 90724

Price: $31.00


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Pack Size: box of 200 strips
Hazard Class /UN Number: Not Restricted
Storage Temp: Room Temperature

This test paper shows violet spots on a white background upon application of solutions containing chromium. The reaction is based on the presence of chromium as chromate. Cr 3+ ions must be converted to chromate. Interferences caused by mercury salts or molybdates are readily circumvented. Limit of sensitivity: 2 mg/l Cr 3+ corresponding to 5 mg/l chromate Note: Non-destructive tests for the detection of chromium in metal alloys are carried out as follows: Apply a drop of a proper acid solution (1 part hydrochloric acid 37 % + 4 parts hydrogen peroxide 3 %) to the degreased steel surface, wait 10 to 30 seconds, add some drops of sodium hydroxide solution and cover the precipitate with filter paper. Press the chromium test paper on top of the filter paper. In the presence of chromium, a violet spot appears when the test paper is bathed in dilute sulphuric acid.Limit of sensitivity: 0.1 % Cr *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING Instruction Sheet (see Quantofix Chromate 91301 for semi-quantitative determination)

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