Buffer solution

半岛bd体育手机客户端 说明

一般描述

It is a certified buffer solution of citric acid/sodium hydroxide/hydrogen chloride, gravimetrically prepared using high-quality reagents at a registered calibration laboratory. It has a pH value of 2.00 at 25℃, measured using a combined glass electrode following a 5-point calibration method. The measurement is made in accordance with DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. The pH value of the buffer solution depends on the temperature and therefore a constant temperature must be maintained during its use.

应用

The buffer solution is used as a standard in analytical procedures for the calibration of pH measuring instruments or pH electrodes and as a control for the measurement of pH of other solutions.

特点和优势

• Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
• Directly traceable to secondary reference standards from NIST and primary certified reference materials 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 quality management system
• 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
• An uncertainty of +/- 0.02 in the pH value at 25℃

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)	2.0 (25 ℃ 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℃

安全信息

储存分类代码	12 - Non Combustible Liquids
WGK	WGK 1
闪点(F)	Not applicable
闪点(C)	Not applicable