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CHEMets Chromate Hexavalent Visual Method

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Hexavalent chromium salts are used in numerous industrial processes. They are also used extensively as corrosion inhibitors in open and closed cooling water systems. With the chromate test method, hexavalent chromium reacts with diphenylcarbazide under acid conditions to form a red-violet colour. Results are quantified photometrically or by visual comparison with standards that are calibrated in ppm (mg/L) CrO4.

CHEMets Chromate Hexavalent Visual Method

The CHEMets Method
To perform a test, immerse the CHEMet ampoule into the sample and snap off the tip.

(Step 1)- the correct volume of sample is automatically drawn in, filling the ampoule; a small inert gas bubble remains in the ampoule.

To facilitate mixing the sample and reagent, tilt the ampoule back and forth so the bubble travels from end to end.

(Step 2). In 2 minutes or less, quantify the result by comparing the filled ampoule to the appropriate colour standard(s)

(Step 3). For higher concentrations, the flat comparator is used. For lower concentrations, the round comparator is used. The ampoule is compared with the standards until a colour match is found.

Kits include 30 ampoules, comparator(s), accessory solution(s)(when necessary), a sample cup, and instructions.

Refill packs of 30 ampoules and accessory solutions are available separately.

Comparators have a 2-year shelf-life.

Material Safety Data Sheets are provided in test kits.

CHEMets ampoules are designed for maximum simplicity and accuracy. Each glass ampoule is 7 mm in diameter, 100 mm in length, with a tapered, pre-scored tip; reagents are vacuum-sealed inside.

Ordering Information:
Range: 0-1 & 1-10 ppm
K-2810 Range: 0-1 & 1-10 ppm MDL: 0.05 ppm / Method: Diphenylcarbazide
Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Acidifier Solution, 25 mL sample cup, instructions, and MSDS.
R-2810 CHEMets Refill, 30 ampoules
A-2800 Acidifier Solution Pack, six 10 mL bottles, Shelf-life 2 years
C-2801 Low Range Comparator, Shelf-life 2 years: 0, 0.1, 0.2, 0.3, 0.4, 0.6, 0.8, 1.0 ppm
C-2810 High Range Comparator, Shelf-life 2 years: 1, 2, 3, 4, 5, 6, 7, 8, 10 ppm

Range 0-30 and 30-300 ppm
K-2810D Range 0-30 and 30-300 ppm MDL: 5 ppm / Method: Diphenylcarbazide
Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Acidifier Solution, 25 mL sample cup, instructions, and MSDS.
R-2810D VACUettes Refill, 30 ampoules
A-2800 Acidifier Solution Pack, six 10 mL bottles, Shelf-life 2 years
C-2801D Low Range Comparator, Shelf-life 2 years: 0, 5, 7.5, 10, 15, 20, 25, 30 ppm
C-2810D High Range Comparator, Shelf-life 2 years: 30, 60, 90, 120, 150, 175, 200, 250, 300 ppm

Range 0-60 and 60-600 ppm
K-2810A Range 0-60 and 60-600 ppm MDL: 10 ppm / Method: Diphenylcarbazide
Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Acidifier Solution, 25 mL sample cup, instructions, and MSDS.
R-2810A VACUettes Refill, 30 ampoules
A-2800 Acidifier Solution Pack, six 10 mL bottles, Shelf-life 2 years
C-2801A Low Range Comparator, Shelf-life 2 years: 0, 10, 15, 20, 30, 40, 50, 60 ppm
C-2810A High Range Comparator, Shelf-life 2 years: 60, 120, 180, 240, 300, 350, 400, 500, 600 ppm

Range 0-120 and 120-1200 ppm
K-2810B Range 0-120 and 120-1200 ppm MDL: 20 ppm / Method: Diphenylcarbazide
Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Acidifier Solution, 25 mL sample cup, instructions, and MSDS.
R-2810B VACUettes Refill, 30 ampoules
A-2800 Acidifier Solution Pack, six 10 mL bottles, Shelf-life 2 years
C-2801B Low Range Comparator, Shelf-life 2 years: 0, 20, 30, 40, 60, 80, 100, 120 ppm
C-2810B High Range Comparator, Shelf-life 2 years: 120, 240, 360, 480, 600, 700, 800, 1000, 1200 ppm

Range 0-1200 & 1200-12,000 ppm
K-2810C Range 0-1200 & 1200-12,000 ppm MDL: 200 ppm / Method: Diphenylcarbazide
Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Acidifier Solution, 25 mL sample cup, instructions, and MSDS.
R-2810C VACUettes Refill, 30 ampoules
A-2800 Acidifier Solution Pack, six 10 mL bottles, Shelf-life 2 years
C-2801C Low Range Comparator, Shelf-life 2 years: 0, 200, 300, 400, 600, 800, 1000, 1200 ppm
C-2810C High Range Comparator, Shelf-life 2 years: 1200, 2400, 3600, 4800, 6000, 7000, 8000, 10,000, 12,000 ppm