Chromium/Chromate

Product Name	Type	Gradation of scale or limit of sensitivity	Item #
Product:�Chromium Test paper	Type:�Yes/No test paper	Gradation / Sensitivity:�2 mg/L Cr³⁺ or 5 mg/L CrO₄^2-	Item #:�90724
This test paper allows the quick and easy detection of Chromate (CrO₄^3-). 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. See QUANTOFIX� Chromate 91301 for semi-quantitative determination. Instruction Sheet (pdf) Color reaction: white → violet Scope of delivery: 200 test strips in a plastic box
Product:�QUANTOFIX� Chromate	Type:�Semi-quantitative test strips	Gradation / Sensitivity:�0 � 2 � 10 � 30 � 100 mg/L CrO₄^2-	Item #:�91301
This test allows the quick and easy determination of Chromate in solutions. It comes with all necessary reagents so that the measurement can immediately be started. Within 30 seconds one gets a reliable result. Many Chromate compounds are poisonous and carcinogenic. They are used for example in chrome plating and tanning. QUANTOFIX� Chromate is used for the easy monitoring of water discharged from such plants. Interferences caused by molybdates are eliminated by addition of oxalic acid in crystalline form to the strongly acidic solution. Iron(III) ions are precipitated with sodium hydroxide solution 32 %. Instruction Sheet (pdf) Color Reaction: white → violet Scope of delivery: 100 test strips in a tube, additional reagents, instruction leaflet in a box
Product:�VISOCOLOR� ECO Chromium	Type:�Colorimetric test kit	Gradation / Sensitivity:�0 � 0.02 � 0.05 � 0.10 � 0.15 � 0.20 � 0.30 � 0.40 � 0.50 mg/L Cr(VI)	Item #:�931020
In sulphuric acid chromate ions react with diphenylcarbazide to form a red-violet dye. (Reaction basis according to DIN EN ISO 7393 G4-2). Instruction Sheet (pdf) Sea water analysis: Yes Scope of delivery: Reagents for 140 tests, color chart and accessories in a box
Product:�NANOCOLOR� total Chromium 2	Type:�Photometric Tube test	Gradation / Sensitivity:�0.05 - 2.00 mg/L Cr 0.005 - 0.500 mg/L Cr	Item #:�985059
Tube test for the determination of total-Chromium. Precise rapid tests for all kind of water and waste water samples. Time-saving and reliable analysis together with our NANOCOLOR photometers. Instruction Sheet (pdf) Sea water analysis: No Scope of delivery: Rugged box with 20 test tubes. Sufficient for 20 tests.
Product:�NANOCOLOR� Chromate 5	Type:�Photometric Tube test	Gradation / Sensitivity:�0.05 - 2.00 mg/L Cr(VI) 0.1 - 4.0 mg/L CrO₄^2-	Item #:�985024
Tube test for the determination of Chromium / Chromate. Precise rapid tests for all kind of water and waste water samples. Time-saving and reliable analysis together with our NANOCOLOR photometers. Instruction Sheet (pdf) Sea water analysis: Yes Scope of delivery: Rugged box with 20 test tubes. Sufficient for 20 tests.

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