Colorimetric determination of free and total chlorine
At a pH value of 5 - 6 free chlorine reacts with N,N-diethyl-1,4-phenylene diamine (DPD) to form a red-violet dye. In the presence of iodide ions the content of total chlorine can be determined, too. (Reaction basis according to DIN EN ISO 7393 G4-2)
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| Data and ordering information | |
| REF | 931 015 (931 215) |
| Type | colorimetric test kit (refill pack) |
| Range | <0.1 · 0.1 · 0.2 · 0.3 · 0.4 · 0.6 · 0.9 · 1.2 · 2.0 mg/L Cl2 |
| Sufficient for | 150 determinations |
| Shelf life | at least 1.5 years after production |
| Sea water suitability | no |
| Range PF-3 | 0.05 - 2.00 mg/L Cl2 |
| Range PF-12 | 0.10 - 2.00 mg/L Cl2 |
The addition of chlorine to swimming pools, water reservoirs and water mains is an approved procedure to rid the water of germs. With the correct dose harmful microorganisms are destroyed, many impurities removed and the growth of algae is prevented. However it is imperative that the chlorine content is regularly checked, since excessive chlorine not only impairs the smell and taste of the water but can be hazardous.
One distinguishes between free chlorine and bound chlorine (chloroamines); the sum of both is called total chlorine.
Note:
When measuring the chlorine content in swimming pools it is recommended to check the pH value as well. For this purpose we supply combination test kits VISOCOLOR®ECO Swimming pool.
The determination of free chlorine includes the concentrations of bromine, bromoamine, chloroamine, iodine and in part chlorine dioxide.
1,0 mg/L Cl2 = 2,3 mg/L Br2 = 3,6 mg/L I2 Higher-valency manganese compounds simulate free chlorine.
Harga:
Rp. 940.800
Refill Pack Rp. 561.600
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