Bộ Kiểm Tra Hypoclorit, 100 lần HI3843 (50 to 150 g/L)

Hypochlorite Chemical Test Kit - HI3843

The HI3843 is a chemical test kit that measures hypochlorite by iodometric titration. The HI3843 is supplied complete with all of the reagents and equipment necessary to perform approximately 100 tests.

Pre-made reagents for ease of use

All reagents marked with expiration date and lot number for traceability

Manual titration performed with color indicator

Significance of Use

Hypochlorites are common bleaching agents used to whiten textiles and paper and to disinfect solutions. Sodium hypochlorite solution has been traditionally used for the treatment of pool water since it is an inexpensive and readily available form of chlorine. The solution usually contains 10 to 15% available chlorine (equivalent to 100 to 150 g/L), but it rapidly loses its strength during storage. In addition, since it is greatly affected by heat, light, pH, and heavy metals, it needs to be monitored regularly.

 

An iodometric titration method is used in the HI3843 test kit. The hypochlorite solution is treated with potassium iodide and strongly acidified with acid (Step 1). The amount of iodine generated is equivalent to the chlorine in the sample. The concentration of iodine is then calculated by titration of thiosulfate ions that reduce the iodine back to iodide ions (Step 2).

Step 1: OCl^- + 2H⁺ + 2I^- → Cl^- + I₂ + H₂O

Step 2: I₂ + 2(S₂O₃)^2- → 2I^- + (S₄O₆)^2-

Hypochlorite Measurement Type	titration
Hypochlorite Range	50 to 150 g/L as chlorine (Cl₂)
Hypochlorite Resolution	5 g.L (0.5%) as chlorine (Cl₂)
Hypochlorite Method	iodometric
Hypochlorite Number of Tests	100

Weight	485 g (17.1 oz.)
Dimensions	235x175x115 mm (9.2x6.9x4.5")

Manual:

manHI_3843