Nitrate is reduced to nitrite in the presence of cadmium. The nitrite thus produced reacts with the reagent to yield an orange compound. The amount of color developed is proportional to the concentration of nitrate present in the aqueous sample.
All Product
Chemical test kit for the determination of nitrate in water in the range 0-50mg / l (ppm). Package size: 100 Tests
All Product
The HANNA test kit for ozone determines the ozone concentration in water via checker disc. The reaction between ozone and the reagent causes a pink tint in the sample which is proportional to the ozone concentration.
Chemical test kits
Chemical test kit for the determination of pH in the range 4-10pH. Package size: 300 tests
Chemical test kit for the determination of phosphate in the range 0:00 to 1:00 mg / / 0.0-5.0 mg / L / 0-50 mg / L (ppm).
Test kit for the chemical determination of silicate in the range 0-1 mg / l (ppm). 100 Tests
Test kit for the chemical determination of silicate in the range 0-40mg / l / 0 800 mg / l (ppm). 100 Tests
HI7034L - EC 80000 µS/cm@25°C - 500ml						
BL983314-1 Resistivity Mini Controller, 0.00 to 19.90 MΩ/cm - 230V						
Reagents for  HI 761 Checker HC ®, 25 Tests						
HI761 Checker HC ® - Total Chlorine, ULR						
เครื่องควบคุมค่าความนำไฟฟ้า						
HI70681L - Ink Stains - 500ml						
เครื่องวัดปริมาณแอมโมเนีย ในน้ำ  รุ่น HI715						
HI4001-00 ISA Alkaline for Ammonia & Cyanide ISE, 500 ml Bottle						
Reagents for HI 705 Checker HC ®, 25 Tests						
HI739 Checker HC ® - Fluoride. HR						
HI981402 pH-Indicator with LED-Alarm & Electrode PRONTO						
HI93501N FOODCARE Thermistor-Thermometer						
Multiparameter Benchtop Photometer and pH meter						
HI93739-01 Fluoride HR - Reagents - 100 Tests						
HI180F Magnetic mini stirrer, dark blue						
HI9124  pH / °C Meter, Waterproof Portable						
HI5004 - 4.01 pH@25°C - TQ - 500ml						
HI706 Checker HC ® - Phosphorous, HR						
สารละลายมาตรฐานความขุ่น 20 NTU						
HI96821 Sodium Chloride - Digital Refractometer Portable						
HI931001  pH and mV Precision Simulator (BNC)						
HI4104 - Calcium ISE, Polymer membrane combination						
HI93102 Water Analysis Meter (with Turbidity up to 50NTU)						
HI70630L - RfE - Fleisch - 500ml						
HI700 Checker HC ® - Ammonia, LR						
HI38054 CTK Ozone