产品说明
分析说明
Concentration β (NH₄⁺): 990 - 1010 mg/l
Determination method: Argentometric titration.
The content of this solution was determined with silver nitrate standard solution (article number 1.09081) standardized against volumetric standard sodium chloride (article number 1.02406). The expanded measurement uncertainty is ± 0.4 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 999b (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard sodium chloride, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.
法律信息
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
产品性质
| 质量水平 | 100 |
| technique(s) | ion chromatography: suitable |
| pH值(酸碱度) | 5.4 (20 ℃ in H2O) |
| 密度 | 0.99 g/cm3 at 20 ℃ |
| application(s) | environmental food and beverages |
| 格式 | single component solution |
| 储存温度 | 15-25℃ |
安全信息
| 储存分类代码 | 12 - Non Combustible Liquids |
| WGK | nwg |
