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เครื่องวัดสีในน้ำตัวอย่าง HI727
1 × ฿3,103.00 -
×
เครื่องวัดค่าเหล็ก รุ่น HI721
1 × ฿3,103.00
Subtotal: ฿6,206.00
Chemischer Testkit zur Bestimmung von Chrom VI im Bereich 0 bis 1,0 mg/l (ppm).
Packungsgröse: 100 Tests
| Messbereich | 0 bis 1,0 mg/l |
| Auflösung | 0,2 mg/l |
| Methode |
Kolorimetrisch – Diphenylcarbohydrazin |
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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.