Buffer solution

半岛bd体育手机客户端 说明

一般描述

The green-colored di-sodium hydrogen phosphate/potassium dihydrogen phosphate buffer solution is gravimetrically prepared using high-quality reagents at a registered calibration laboratory. Its pH value of 7.00 at 20℃ is measured following a 5-point calibration method, using a combined glass electrode. The measurement is made following DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. Its pH value is strongly dependent on the temperature and therefore a constant temperature must be maintained during its use.

应用

The buffer solution is meant to be used as a calibration standard for pH measuring instruments or pH electrodes and as a control for measuring the pH value of solutions.

特点和优势

• Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
• Directly traceable to secondary reference standard from NIST and primary certified reference standard from PTB
• Ready-to-use solution
• Available in a sealed plastic bottle to prevent contamination
• 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

半岛bd体育手机客户端 性质

质量水平	300
等级	certified reference material
半岛bd体育手机客户端 线	Certipur?
pH值(酸碱度)	7.0 (20 ℃ in H2O)
密度	1.00 g/cm3at 20 ℃
application(s)	environmental food and beverages general analytical industrial qc pharmaceutical
格式	mixture
储存温度	15-25℃