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Chlorine MR with Powder Packs

0.02 - 3.5 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
  • Drinking Water Treatment
  • Pool Water Control
  • Pool Water Treatment
  • Raw Water Treatment
  • Waste Water Treatment
Product finder
Title Method No. Packaging Unit Part Number Mark as favourite
VARIO Chlorine Free DPD F10 Array Powder / 100 pc. 530180
VARIO Chlorine Free DPD F10 Array Powder / 1000 pc. 530183
VARIO Chlorine Total DPD F10 Array Powder / 100 pc. 530190
VARIO Chlorine Total DPD F10 Array Powder / 1000 pc. 530193
Title Online Download Type Format Language Direct Download
Instruction Manual Single Method Chlorine VARIO PP (Method No.: M113) Instruction Manual PDF (2.07 MB)
Tintometer Chlorine Comparability Study Studies PDF (0.91 MB)
Title Part Number SDS Country Direct Download
Vario Chlorine Free - DPD F5_F10_F25_PD 250 00530099
Vario Chlorine Total - DPD F5_F10_F25_PD250 00530089