223102 Free Chlorine Color Disc Test Kit, Model CN-66F

Model CN-66F is required to perform free chlorine analysis in water samples. Free Chlorine Color Disc Test Kit measures free chlorine in the following range: 0 - 3.4 mg/L Cl₂. The kit uses Color Disc/DPD method. Free Chlorine Color Disc Test Set may be used for 100 samples. The smallest increment is 0.2 mg/L Cl₂.

Free Chlorine Color Disc Test Set contains:

• DPD Free Chlorine Reagent Powder Pillows (p/n 1407799)
• DPD Chlorine Color Disc, 0-3.4 mg/L (p/n 990200)
• Color Comparator Box (p/n 173200)
• 18 mm Plastic Viewing Tubes, with caps (p/n 4660004)

Procedure for Cl₂ measurement

Before you start take into account the following:

• It is required to install the color disc on the center pin in the color comparator box (numbers to the front).
• It is recommended to rinse tubes with sample before the analysis.
• It is necessary to rinse tubes with deionized water after the analysis.

Testing procedure

Fill two tubes to the 5 mL line with sample. Place the first tube into the left opening of the color comparator box. Add the content of DPD Free Chlorine Powder Pillow to the second tube and swirl to mix. The pink color develops as the result of the reaction. Read the testing results within 1 minute. Install the second tube into the color comparator box, turn the color disc to match the color and analyze the testing results displayed in mg/L in the scale window.