半岛bd体育手机客户端 说明

一般描述

The di-sodium tetraborate buffer solution is gravimetrically prepared at a registered calibration laboratory with high-quality reagents and water. Its pH value of 9.20 at 25℃ 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 is temperature dependent and therefore a constant temperature must be maintained during its use.

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
• Available in secure 500 mL plastic bottle to protect against 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

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
agency	traceable to NIST SRM traceable to PTB
半岛bd体育手机客户端 线	Certipur?
pH值(酸碱度)	9.2 (25 ℃ in H2O)
bp	100 ℃/1013 hPa
密度	1.00 g/cm3at 20 ℃
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