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Chlorine HR with Powder Packs

0.1 - 8 mg/l Cl2 a) Mark as favourite

Chlorine is the most popular and widely used of the disinfectants. The chlorination of water supplies, swimming pools and cooling tower waters are but a few of the everyday applications.

Free Chlorine (hypochlorous acid) reacts with Ammonia and certain Nitrogenous compounds to form Combined Chlorine. With Ammonia, the reaction produces chloramines which have very little disinfecting power, thus it is important to be able to determine the various fractions of Chlorine present at any one time.

DPD (NN Diethyl p Phenylene Diamine Sulphate) is the preferred reagent for the determination of Free, Combined and Total Chlorine. It is available in Tablet, Liquid and Powder form. A list of compatible instrumentation and test kits can be found below.

Total Chlorine can also be measured using a Potassium Iodide reagent. This can measure concentrations of up to 300 mg/l chlorine and is widely used in food manufacturing and industrial water treatment.


  • Boiler Water
  • Cooling Water
  • Disinfection Control
  • Pool Water Control
  • Pool Water Treatment
  • Raw Water Treatment
  • Waste Water Treatment
Product finder
Title Method No. Packaging Unit Part Number Mark as favourite
Chlorine Free DPD F10 Array Powder / 100 pc. 530100
Chlorine Free DPD F10 Array Powder / 1000 pc. 530103
Chlorine Total DPD F10 Array Powder / 100 pc. 530120
Chlorine Total DPD F10 Array Powder / 1000 pc. 530123
Title Online Download Type Format Language Direct Download
Instruction Manual Single Method Chlorine HR PP (Method No.: M111) Instruction Manual PDF (2.07 MB)
Validation Data Free Chlorine DPD F10 Validation Data PDF (0.12 MB)
Validation Data Total Chlorine DPD F10 Validation Data PDF (0.12 MB)
Title Part Number SDS Country Direct Download
Chlorine Free - DPD F10_PD 250 00530109
Chlorine Total - DPD F10_PD250 00530129