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Ammonium standard solution
| 产品编号： | 4060959 |
| 规格： | traceable to SRM from NIST NH4Cl in H2O 1000 mg/l NH4 Certipur® |
| 包装规格： | 500 ML |
| 产品类别： | 进口试剂 |
| 品牌： | Supelco |
| 优惠价： | 立即咨询 |
产品性质
| Quality Level【质量水平】 | 100 |
| technique(s) | ion chromatography: suitable |
| pH【pH值(酸碱度)】 | 5.4 (20 ℃ in H2O) |
| density | 0.99 g/cm3 at 20 ℃ |
| application(s) | environmental food and beverages |
| format【格式】 | single component solution |
| storage temp.【储存温度】 | 15-25℃ |
基本信息
| Analysis Note【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. |
| Legal Information【法律信息】 | CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany |
安全信息
| Storage Class Code【储存分类代码】 | 12 - Non Combustible Liquids |
| WGK | nwg |
