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    ชุดทดสอบน้ำสระว่ายน้ำ (Chlorine + pH)

    VISOCOLOR® ECO Swimming pool

    Colorimetric determination of chlorine and pH-value

    Free chlorine reacts with N,N-diethyl-1,4-phenylene diamine (DPD) to form a red-violet dye. The pH value is determined with phenol red as indicator.
    For test kits for the determination of chlorine alone see VISOCOLOR® Chlorine.

    Data and ordering information
    Cat. No. 931 090 (931 290)
    Type colorimetric test kit (refill pack)

    < 0.1 · 1 · 0.2 · 0.3 · 0.4 · 0.6 ·
    0.9 · 1.2 · 2.0 mg/l Cl2
    pH 6.9 7.2 7.4 7.6 7.8 8.2

    Sufficient for 150 determinations
    Shelf life at least 18 months
    Sea water suitability


    Detectable with PF-11 pH: no; Cl2: yes

    Chlorination of water in swimming pools with chlorine or chlorine compounds takes place within certain limits. One distinguishes between free chlorine and bound chlorine (chloroamines); the sum of both is called total chlorine. The content of free chlorine should be between 0.3 and 0.6 mg/l. Chlorination alters the pH value of the swimming pool water. The ideal pH value is pH 7.4. This prevents formation of malodorous pollutants and irritants to the mucous membrane, and prevents damage to the water treatment system.


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