产品说明
一般描述
Certipur® certified secondary standard reference buffers are used to precisely calibrate and monitor pH measurement instruments and buffer solutions. They are quality controlled and qualified in our ISO/IEC 17025 and ISO 17034 accredited calibration laboratories against certified primary standard reference materials (SRM) in compliance with DIN 19266, IUPAC, NIST, Ph. Eur and USP. Certipur® reference materials offer maximum accuracy, reliability and convenience and help avoid costly repeat analyses.
应用
Potassium tetraoxalate dihydrate [pH (S) = 1.67₉ (25 ℃)] is a certified secondary standard reference material used as a calibration buffer standard for pH instruments or pH electrodes.
特点和优势
- The product is delivered with a comprehensive, batch-specific Certificate of Analysis showing the relevant data for the quality management system.
- The pH value of this Certipur® buffer solution is qualified using differential potentiometry with two platinum hydrogen electrodes against NIST & PTB primary reference materials [pH (S) = 1.67
9 (25 ℃)]. - This buffer standard has a guaranteed shelf life of 4 years.
- Potassium tetraoxalate dihydrate buffer is a Certified Reference Material (CRM) offered in neat format. Solution of this standard is prepared in-house following instructions in European Pharmacopoeia (Ph. Eur. 2.2.3).
- Intended for extremely precise calibration, qualification and monitoring of pH instruments and routine assessment of their performance.
分析说明
pH-value (25 °C): 1.674 - 1.683
法律信息
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
基本信息
| 经验(实验)分子式 | C4H3KO8 · 2H2O |
| 分子量 | 254.19 |
| MDL编号 | MFCD00150443 |
| EC索引号 | 204-874-6 |
产品性质
| 质量水平 | 300 |
| 等级 | certified reference material |
| agency | complies with DIN 19266 |
| 产品线 | Certipur® |
| pH值(酸碱度) | 1.7 (25 ℃, 12.6 g/L in H2O) |
| 溶解性 | 25 g/L |
| 密度 | 1.84 g/cm3 at 20 ℃ |
| 堆积密度 | 860 kg/m3 |
| application(s) | environmental food and beverages general analytical industrial qc pharmaceutical |
| 格式 | neat |
| 储存温度 | 15-25℃ |
| InChI | 1S/2C2H2O4.K/c2*3-1(4)2(5)6;/h2*(H,3,4)(H,5,6);/q;;+1/p-1 |
| InChI key | GANDVAJEIJXBQJ-UHFFFAOYSA-M |
安全信息
| 象形图 |  |
| 警示用语： | Warning |
| 危险声明 | H302 + H312 - H319 |
| 预防措施声明 | P264 - P270 - P280 - P301 + P312 - P302 + P352 + P312 - P305 + P351 + P338 |
| 危险分类 | Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Irrit. 2 |
| 储存分类代码 | 11 - Combustible Solids |
| WGK | WGK 1 |
