Contents: Test kits contain 30 ampoules, comparator(s), accessory solutions (when necessary), snap cup, and instructions. Refill packs of 30 ampoules, and accessory solutions, are available.

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, and reagents are vacuum sealed inside.

The CHEMets Method. The CHEMet^TM ampoule is immersed in the sample and the tip snapped off. The correct volume of sample is drawn in, and a small inert gas bubble forms. 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 (comparators or color chart) 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 around it.

Medium Concentrations: Above 1 ppm. The flat comparator usually is used for concentrations higher than 1 ppm. The analyst places the filled ampoule between standards until a color match is found.

Comparators have a 2-year shelf-life.

Material Safety Data Sheets are provided in test kits.

Step 1. Fill the snap cup with the water sample, then immerse the ampoule and snap the tip. The ampoule will fill instantly and an inert bubble will form.

Step 2. Mix sample and reagent by tilting the ampoule several times.

Step 3. Quantify the result with the appropriate color comparator.

DCR Photometers provide instrumental results for 9 parameters.