产品说明
一般描述
The certified secondary standard reference buffer solution of potassium dihydrogen phosphate/di-sodium hydrogen phosphate is gravimetrically prepared using high-quality reagents in high-purity water. Its pH value is analyzed by differential potentiometry with two platinum hydrogen electrodes against primary certified reference materials from NIST & PTB. Also, the pH analysis uses the 5-point calibration method, following DIN 19268, against certified primary reference standards as per DIN 19266.
应用
The buffer solution can be used for the calibration, qualification, and monitoring of pH measuring instruments and as a control for testing other buffer solutions.
特点和优势
- Available in solution format in a secure 100 mL high-density plastic bottle
- Subjected to detailed stability studies as per ISO Guide 35
- Product label having relevant information on order number, article description, lot number, expiry date and safety data, in accordance with ISO Guide 31
- Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective quality management system
- Measured and qualified in ISO/IEC 17025 and ISO 17034 accredited laboratory
- Traceable to SRMs from NIST and primary certified reference standards from PTB
分析说明
pH-value: 7.414 - 7.420
For complete data see the enclosed certificate
法律信息
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
产品性质
| 质量水平 | 300 |
| 等级 | certified reference material |
| agency | complies with DIN 19266 |
| 产品线 | Certipur® |
| 组成 | potassium dihydrogen phosphate/di-sodium hydrogen phosphate |
| pH值(酸碱度) | 7.41 (25 ℃) |
| application(s) | environmental food and beverages general analytical industrial qc pharmaceutical |
| 格式 | mixture |
| 储存温度 | 15-25℃ |
安全信息
| 储存分类代码 | 12 - Non Combustible Liquids |
| WGK | nwg |
| 闪点(F) | Not applicable |
| 闪点(C) | Not applicable |
