CHEMetrics Chlorine Test Kits

Due to its strong oxidizing properties, chlorine is an excellent biocide used to treat potable waters, municipal waste, and swimming pools. When used to treat potable water, chlorine helps alleviate the adverse effects of iron, manganese, ammonia, and sulfide.

The DPD Method

In the USEPA-accepted DPD methodology, free chlorine reacts with DPD to form a pink product. When ammonia or amines are present, some of the chlorine may exist as combined chlorine. Combined chlorine will not interfere with the free chlorine results, provided the readings are taken at one minute. To determine total Chlorine (the sum or free & combined), use the A-2500 Activator Solution (potassium iodide) supplied in the kit. Results are expressed as ppm (mg/L) Cl₂. The DPD method is also applicable to the direct determination of hypochlorite concentrations in various cleaning preparations and disinfectants prior to their dilution. DPD reacts with hypochlorite ions to form a pink color. Results are expressed as percent (%) NaOCl.

The DDPD Method

The DDPD method is derived from the DPD method. Test kits that employ this chemistry are well suited for use where biocides and chromate corrosion inhibitors are used simultaneously. DDPD reacts with free chlorine to form a purple product. When ammonia or amines are present in the sample, some of the chlorine may exist as combined chlorine. To determine total chlorine (the sum of free and combined), use the A-2500 Activator Solution (potassium iodide) that is supplied with the kits. Results are expressed as ppm (mg/L) Cl₂.

Choose from three different kits: Single Paramter Kit with Photometer, Vacu-Vials Kits for SAM or Multi-Analyte Photometers (photometer not included), or Visual Kits

SAM Kits include a SAM photometer and come in a plastic case and contains everything needed to perform 30 tests: Vacu-vials ampoules, SAM Photometer, 4 AAA batteries, screwdriver, and instructions.

Vacu-Vials Kits come in a cardboard box and contains everything needed to perform 30 tests: thirty ampules, activator solution, 25mL sample cup, ampoule blank, and instructions. Requires V-3000 Photometer, an I-2019 Photometer or Spectrophotometer (sold separately)

Visual Test Kits come in a plastic case and contains everything needed to perform 30 tests: refill, low & high range comparators, activator solution, 25mL sample cup, and instructions

• Visual Kit Refill includes 30 self-filling CHEMets ampoules, securely packaged in cardboard trays and a protective box for durability during storage and transport. Ideal for field and lab testing, this refill ensures dependable results in water treatment and disinfection monitoring.