Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting in diminished disinfecting capabilities compared with free chlorine. These chlorine compounds together with chloramines form combined chlorine. Combined chlorine and excess free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and has a lesser volatility. There should be sufficient levels of unreacted free chlorine for adequate disinfection, but not so much as to become harmful.
Order Information:
HI 3887 test kit comes with color comparison cubes (2), 20 mL reagent 1, 15 mL reagent 2, 25 mL HI 3881-0 pH 6.0-8.5 reagent
Specification :
| Method | Colorimetric | |
| Range | Cl²: 0.0-2.5 mg/L pH: 6.0-8.5 pH |
|
| Smallest Increment | Cl²: 0.5 mg/L pH: 0.5 pH |
|
| Chemical Method | DPD pH indicator |
|
| Number of Tests | Cl²: approx. 50 pH: 100 |
|
| Weight | 280 g |
HI38040 CTK Iron Medium Range
HI70038P - 6.44 g/l (ppt) TDS@25°C - 25x20ml
HI4104 - Calcium ISE, Polymer membrane combination
HI3810-100 - Reagents for CTK Dissolved Oxygen
HI7081L 30 g/L Na solution for Sodium ISE, 500 ml Bottle
HI5013 - 13.00 pH@25°C - TQ - 500ml
สารละลายอิเล็กโทรไลต์สำหรับเติมหัววัดค่ากรด-ด่าง (HI7082)
Calibration Standard HI 755 Checker HC ®
HI70080P - 800 mg/l (ppm) TDS@25°C - 25x20ml
HI98312 DiST®6 EC/TDS/C°-Tester, (0.00-20.00 mS/cm - 0.00-10.00 g/l (ppt)) waterproof
HI76302W Four ring Conductivity probe with internal temperature sensor
HI755 Checker HC ® - MARINE Alkalinity (dHK)
FC210B - pH Elektrode
HI7006L - 6.86 pH@25°C - SQ - 500ml
HI904 Karl Fischer Coulometric Titrator - 1ppm to 5%
เครื่องควบคุมค่าความนำไฟฟ้า
HI983302N EC Indicator up to 9.99 mS with Electrode GRO'CHEK
HI700661P - RfE - Landwirtschaft - 25x20ml
HI1001 Industrial-pH-Electrode "Flow-thru" Monitoring, PVDF BNC, 3 m Cable
เครื่องวัดปริมาณฟอสเฟต ช่วงสูง รุ่น HI717
HI95771-01 Chlorine HR - Reagents-Kit - 100 Tests
HI4013-03 ISE 1000 mg/L (ppm) Nitrate Std , 500 ml Bottle 

