推荐产品
等级
certified reference material
质量水平
产品线
Certipur®
pH值（酸碱度）
11.0 (25 °C in H2O)
密度
1.01 g/cm3 at 20 °C
应用
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
格式
mixture
储存温度
15-25°C
一般描述
The boric acid/sodium hydroxide/potassium chloride buffer solution is gravimetrically prepared at a registered calibration laboratory with high-quality reagents and water. Its pH value of 11.00 at 25°C is measured using a combined glass electrode following a 5-point calibration method. The measurement is made following DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. The buffer pH strongly depends on the temperature and therefore a constant temperature must be maintained during its use.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
应用
The buffer is used as a standard to calibrate pH measuring instruments or pH electrodes and as a control to measure the pH of other solutions.
特点和优势
- Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
- Traceable to secondary reference standard from NIST and primary certified reference standard from PTB
- Ready-to-use solution available in 30 mL sachets
- Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective audit
- Product label follows the ISO Guide 31 and contains information about ordering number, article description, lot number, safety data, and expiry date
- Packaging material subjected to comprehensive stability studies as per ISO Guide 35
法律信息
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
推荐
产品编号
说明
价格
警示用语：
Danger
危险声明
危险分类
Repr. 1B
储存分类代码
6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
WGK
nwg
闪点(°F)
Not applicable
闪点(°C)
Not applicable
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