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Chlorine with Tablet

0.02 - 0.5 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 Packaging Unit Part Number Mark as favourite
DPD No. 1 Tablet / 100 511050BT
DPD No. 1 Tablet / 250 511051BT
DPD No. 1 Tablet / 500 511052BT
DPD No. 3 Tablet / 100 511080BT
DPD No. 3 Tablet / 250 511081BT
DPD No. 3 Tablet / 500 511082BT
DPD No. 1 High Calcium Tablet / 100 515740BT
DPD No. 1 High Calcium Tablet / 250 515741BT
DPD No. 1 High Calcium Tablet / 500 515742BT
DPD No. 3 High Calcium Tablet / 100 515730BT
DPD No. 3 High Calcium Tablet / 250 515731BT
DPD No. 3 High Calcium Tablet / 500 515732BT
DPD No. 4 Tablet / 100 511220BT
DPD No. 4 Tablet / 250 511221BT
DPD No. 4 Tablet / 500 511222BT
Title Online Download Type Format Language Direct Download
Instruction Manual Single Method Chlorine 50 T Instruction Manual PDF (2.22 MB)
Validation Data DPD No.1 Free Chlorine Validation Data PDF (0.12 MB)
Title Part Number SDS Country Direct Download
DPD No_1 00511051
DPD No_1 High Calcium 00515741
DPD No_3 00511081
DPD No_3 High Calcium 00515731
DPD No_4 00511221