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.
Colorimetric
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
All Product
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).
Checker Disc
Reagent kit for HI 38061 (100 tests)
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
 HI93719-01 Hardness Magnesium - Reagents -100 Tests
HI93719-01 Hardness Magnesium - Reagents -100 Tests						 HI93703-05 AMCO-AEPA-1 Calibration Solution at 500 FTU, 30 ml-Copy
HI93703-05 AMCO-AEPA-1 Calibration Solution at 500 FTU, 30 ml-Copy						 Reagents for HI 715 Checker HC ®, 25 Tests
Reagents for HI 715 Checker HC ®, 25 Tests						 HI7091L - Reducing Pretreatment Solution, 500 ml
HI7091L - Reducing Pretreatment Solution, 500 ml						 HI93102 Water Analysis Meter (with Turbidity up to 50NTU)
HI93102 Water Analysis Meter (with Turbidity up to 50NTU)						 สารละลายมาตรฐานความขุ่น 20 NTU
สารละลายมาตรฐานความขุ่น 20 NTU						 HI7072 Electrolyte Solution, 1M KNO³, 4 x 30 ml
HI7072 Electrolyte Solution, 1M KNO³, 4 x 30 ml						 HI96802 Fructose - Digital Refractometer Portable
HI96802 Fructose - Digital Refractometer Portable						 HI731335 - Cap for Cuvette 4 pcs. - Serie HI967xx
HI731335 - Cap for Cuvette 4 pcs. - Serie HI967xx						 เครื่องวัดคลอรีน
เครื่องวัดคลอรีน						 HI76405 Electrode Holder with Steel Base
HI76405 Electrode Holder with Steel Base						 HI7009L - 9.18 pH@25°C - SQ - 500ml
HI7009L - 9.18 pH@25°C - SQ - 500ml						 HI96770-01 Silica HR - Reagents - 100 Tests
HI96770-01 Silica HR - Reagents - 100 Tests						 เครื่องวัดค่าเหล็ก รุ่น HI721
เครื่องวัดค่าเหล็ก รุ่น HI721						 HI8936DN EC - Transmitter - 0.0 to 199.9 µS/cm
HI8936DN EC - Transmitter - 0.0 to 199.9 µS/cm						 Reagents for HI 755 Checker HC ®, 25 Tests
Reagents for HI 755 Checker HC ®, 25 Tests						 HI98128 pH/°C-Tester (0.01 pH resolution) - waterproof
HI98128 pH/°C-Tester (0.01 pH resolution) - waterproof						 BL983329-1 TDS Mini Controller 0.0 to 999 mg/L (ppm) - 230V
BL983329-1 TDS Mini Controller 0.0 to 999 mg/L (ppm) - 230V						 HI7071 Electrolyte Solution 3.5 M KCl + AgCl, 4 x 30 ml
HI7071 Electrolyte Solution 3.5 M KCl + AgCl, 4 x 30 ml						 HI700 Checker HC ® - Ammonia, LR
HI700 Checker HC ® - Ammonia, LR						 HI93740-01 Nickel LR - Reagents - 50 Tests
HI93740-01 Nickel LR - Reagents - 50 Tests						 น้ำยามาตรฐานสอบเทียบ
น้ำยามาตรฐานสอบเทียบ						 Reagents for HI 707 Checker HC ®, 25 Tests
Reagents for HI 707 Checker HC ®, 25 Tests						 HI70080C - 800 mg/l (ppm) TDS@25°C  Zert. - 25x20ml
HI70080C - 800 mg/l (ppm) TDS@25°C  Zert. - 25x20ml						 HI5074 - 7.40 pH@25°C - TQ - 500ml
HI5074 - 7.40 pH@25°C - TQ - 500ml						 HI5002-01 - 2.00 pH@25°C - TQ - 1000ml
HI5002-01 - 2.00 pH@25°C - TQ - 1000ml						 BL983318-1 TDS Mini Controller 0.0 to 10.00 g/L (ppt) - 230V
BL983318-1 TDS Mini Controller 0.0 to 10.00 g/L (ppt) - 230V						 HI96822 Seawater Analysis (Salinity) - Digital Refractometer Portable
HI96822 Seawater Analysis (Salinity) - Digital Refractometer Portable						 HI3810-100 - Reagents for CTK Dissolved Oxygen
HI3810-100 - Reagents for CTK Dissolved Oxygen						 เครื่องวัดปริมาณโครเมี่ยม ช่วงสูง รุ่น HI723
เครื่องวัดปริมาณโครเมี่ยม ช่วงสูง รุ่น HI723						 HI38061 CTK Phosphate
HI38061 CTK Phosphate						 
				 
				 
				 
				 
				 
				 
				