HI38020 Free & Total Chlorine Test Kit Low, Medium and High Range with Checker® Disc The HI38020 is a chemical test kit that determines the free and total chlorine concentration in three ranges: 0.00 to 0.70 mg/L, 0.0 to 3.5 mg/L, and 0.0 to 10.0 mg/L. The HI38020 is supplied with all of the necessary reagents and equipment to perform both analyses, including the Checker® disc for accurate determination. The test kit contains enough reagents for perform approximately 200 tests. • Complete setup · All required materials are included with the test kit, such as the glass vials, plastic pipette, reagent packets, and Checker® disc. • High resolution · Readings from 0.00 to 0.70 mg/L are determined to 0.02 mg/L resolution. · Readings from 0.0 to 3.5 mg/L are determined to 0.1 mg/L resolution. · Readings from 0.0 to 10.0 mg/L are determined to 0.5 mg/L resolution. • Replacement reagents available · There is no need to buy a new kit when reagents are exhausted. The HI38020-200 can be ordered to replace the reagents supplied with the kit. Signicance of Use Chlorine is the most commonly used water disinfectant in applications such as drinking water and wastewater treatment, pool and spa sanitization, and food processing and sterilization. Chlorine present in water binds with bacteria, leaving only a part of the original quantity (free chlorine) to continue its disinfecting action. If the free chlorine level is improper with respect to pH, water will have an unpleasant taste and odor and the disinfecting potential of the chlorine will be diminished. Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds; this results in diminished disinfecting capabilities compared with free chlorine. Chlorine compounds together with chloramines form combined chlorine. Combined chlorine and free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and lower volatility. Specifications HI38020 Free & Total Chlorine (as Cl«) Type checker disc Range 0.00-0.70 mg/L (ppm) 0.0-3.5 mg/L (ppm) 0.0-10.0 mg/L (ppm) Smallest Increment 0.02 mg/L (ppm) 0.1 mg/L (ppm) 0.5 mg/L (ppm) Method DPD Number of Tests 200 avg. Ordering Information HI38020 test kit comes with HI93701-0 free chlorine reagent (100 packets), HI93711-0 total chlorine reagent (100 packets), demineralizer bottle with filter cap for 12 L, checker disc, glass vials with caps (2) and 3 mL plastic pipettes Reagent HI38020-200 free & total chlorine, 200 tests avg. Specifications HI38017 Free & Total Chlorine (as Cl«) Type checker disc Range 0.00-0.70 mg/L (ppm) 0.0-3.5 mg/L (ppm) Smallest Increment 0.02 mg/L (ppm) 0.1 mg/L (ppm) Method DPD Number of Tests 200 avg. Ordering Information HI38017 test kit comes with HI93701-0 free chlorine reagent (100 packets), HI93711-0 total chlorine reagent (100 packets), demineralizer bottle with filter cap for 12 L, checker disc, glass vials with caps (2) and 3 mL plastic pipettes Reagent HI38017-200 free & total chlorine, 200 tests avg. HI38017 Free & Total Chlorine Test Kit Low and Medium Range with Checker® Disc The HI38017 is a chemical test kit that determines the free and total chlorine concentration in two ranges: 0.00 to 0.70 mg/L and 0.0 to 3.5 mg/L. The HI38017 is supplied with all of the necessary reagents and equipment to perform both analyses, including the Checker® disc for accurate determination. The test kit contains enough reagents for perform approximately 200 tests. • Complete setup · All required materials are included with the test kit, such as the glass vials, plastic pipette, reagent packets, and Checker® disc. • High resolution · Readings from 0.00 to 0.70 mg/L are determined to 0.02 mg/L resolution. · Readings from 0.0 to 3.5 mg/L are determined to 0.1 mg/L resolution. • Replacement reagents available · There is no need to buy a new kit when reagents are exhausted. The HI38017-200 can be ordered to replace the reagents supplied with the kit. Signicance of Use Chlorine is the most commonly used water disinfectant in applications such as drinking water and wastewater treatment, pool and spa sanitization, and food processing and sterilization. Chlorine present in water binds with bacteria, leaving only a part of the original quantity (free chlorine) to continue its disinfecting action. If the free chlorine level is improper with respect to pH, water will have an unpleasant taste and odor and the disinfecting potential of the chlorine will be diminished. Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds; this results in diminished disinfecting capabilities compared with free chlorine. Chlorine compounds together with chloramines form combined chlorine. Combined chlorine and free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and lower volatility. Chemical test kit reagents begin on page 9.44 9 Chemical Test Kits 9.16 | www.hannainst.com
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