硝酸盐测试盒 VISOCOLOR® alpha Nitrate
◆MN的935065硝酸盐测试盒，可测试的硝酸盐范围是2-8-15-30-50 mg/l NO3–，每盒可测试100次，保质期18个月。
VISOCOLOR® alpha
说明内容 | 详细描述 |
测试原理 | 比色法： |
•目测法 |
•不含危险物质，不会产生环境污染 |
•价格经济使用方便 |
•测试结果** |
•带有图示操作说明 |
•包装小巧，便于携带 |
•试剂瓶上清楚的标有用量说明 |
测试方法 | 1、在取样试管中加入样品溶液 |
2、加入液体试剂 |
3、加入固体试剂 |
4、混合均匀 |
5、等待一定反应时间 |
6、与标准比色卡进行颜色对比并从上部观察 |
Colorimetric determination of nitrate MN硝酸盐测试盒
Nitrate is reduced to nitrite with an inorganic reducing agent. Nitrite is then diazotised with an aromatic amine and simultaneously coupled to form an azo dye.
Nitrite interferes (same reaction), but can be eliminated by boiling with amidosulphuric acid (Cat. No. 918 973). Oxidising substances such as chlorine can lower the result or completely inhibit the reaction depending on their concentration.
MN硝酸盐测试盒 Data and ordering information
Cat. No. | 935 065 |
Type | colorimetric test kit |
Range | 2 · 8 · 15 · 30 · 50 mg/l NO3– |
Sufficient for | 100 determinations |
Shelf life | at least 18 months |
Sea water suitability | yes |
Detectable with PF-11 | no |
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.
