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Chemical test kit for the determination of potassium in the soil in the range 0 to 50 mg / l (ppm) and 50 to 250 mg / l (ppm). 100 Tests
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Chemical test kit for the determination of zinc in the range 0 to 3.0 mg / l (ppm). Package size: 100 Tests
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Chemical test kit for the determination of iron in the range 0.00-1,00 mg / l (ppm). Package size: 100 Tests
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.
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Chemical test kit for the determination of calcium in irrigation water in the range 0 to 125 mg / l (ppm) and from 0 to 250 mg / l (ppm).
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Chemischer Testkit zur Bestimmung von Kupfer im Bereich 0,00 bis 0,25 mg/l / 0,0 bis 6,0 mg/l (ppm). Packungsgrösse: 100 Tests
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Chemical test kit for the determination of calcium and magnesium hardness of irrigation water in the range> 0.0 meq / l
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Testkit SAR sodium determined risk into irrigation water by calculation of SAR (Sodium Adsorption Ratio) with respect to calcium and magnesium concentration. 100 Tests
081-855-1842
02-541-4199
เครื่องวัดปริมาณแอมโมเนีย ช่วงสูง รุ่น HI733 
น้ำยามาตรฐานสอบเทียบ 
HI38040 CTK Iron Medium Range 
