Visual comparison kits employ self-filling reagent ampoules for use with dependable, stable comparators containing liquid color standards. We have 4 categories of products:
Kits for titration tests use Titrets®
Use CHEMets® for fast, simple, low-to-medium range analysis.
CHEMets® Self-Filling Ampoules
for Visual Colorimetric Analysis
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Test kits contain 30 ampoules, comparators, accessory solutions (when necessary), snap cup, MSDS, and instructions.
Refill packs of 30 ampoules, and accessory solutions, are available.
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CHEMets® ampoules are designed for maximum simplicity and accuracy. Use them for low- to medium-range colorimetric analysis. Each ampoule is 7 mm in diameter with a tapered, prescored tip. Reagents are vacuum sealed inside.
The CHEMets® Method: The analyst immerses the CHEMet ampoule in the sample and snaps the tip. The correct volume of sample is drawn in by vacuum, and a small inert gas bubble remains. Sample and reagent are mixed by tilting the ampoule so the bubble travels from end to end. In 2 minutes or less, the resulting color is compared to the appropriate color standards to quantify the result.
Low Concentrations (Less than 1 ppm.) In most cases the cylindrical comparator is used to quantify low concentrations. The filled test ampoule is placed in the center and compared with the eight color standards surrounding it.
Medium Concentrations (Above 1 ppm.) The flat comparator is usually used for concentrations higher than 1 ppm. The analyst places the filled ampoule next to individual standards until a color match is found.
HOW TO USE CHEMets®
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Step 1. SNAP. Fill the snap cup with your water sample, then snap the tip of a CHEMet ampoule as shown in the diagram above. Vacuum inside the tube will cause it to fill instantly with sample fluid and mix with the pre-measured reagent inside.
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Step 2. MIX. Mix the contents of the filled ampoule by tilting it up and down several times, each time allowing the small bubble inside to travel from end to end.
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Step 3. READ. Use one of the convenient comparators to quantify your test result. For low range testing, view the ampoule lengthwise; use the flat comparator for medium range samples.
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