Photometric determination of free and total chlorine with N,N-diethyl-1,4-phenylene diamine (DPD).
Free chlorine, total chlorine and ozone react with DPD N,N-diethyl-1,4-phenylene diamine) to form a red-violet dye. By defined addition of iodide ions, one can differentiate between the individual components.
- REF: 91816
- Type: standard test 1-16
- Range: 0.02 - 10.0 mg/L Cl2
- Sufficient for: 250 determinations*
- Shelf life: 3 years
- Sea water suitability: yes**
* Maximum number, the actual number of tests depends on the sample volume
** Please read the leaflet