說明內(nèi)容 | 詳細描述 |
測試原理 | 滴定計數(shù)法: |
目測法 | |
不含危險特質(zhì),不會產(chǎn)生環(huán)境污染 | |
價格經(jīng)濟 | |
使用方便 | |
具有更高的靈敏度和**性 | |
由于分開滴定試劑,顏色變化更為明顯 | |
試劑瓶上清楚的標有用量說明 | |
測試方法 | 1、在取樣試管中加入樣品溶液 |
2、加入指示試劑混合均勻 | |
3、 逐滴加入滴定溶液 | |
4、直到指示劑發(fā)生顏色變化 | |
注計算滴數(shù):1 滴=1 個測量單位,例如:1 °d |
Cat. No. | 931 041 (931 241) |
Type | colorimetric test kit (refill pack) |
Range | 0-1-3-5-10-20-30-50-70-90-120 mg/l NO3– |
Sufficient for | 110 determinations |
Shelf life | at least 18 months |
Sea water suitability | yes |
Detectable with PF-11 | yes |
Nitrates occur in most ground and surface waters in concentrations of up to 20 mg/l. In addition to mere geological influences nitrate concentrations can also increase from agricultural sources (fertilisers). The VISOCOLOR® test kits are intended for the determination of nitrate in surface and drinking water and in industrial waste waters which do not contain high concentrations of interfering ions.