1.09407

Buffer solution

(potassium dihydrogen phosphate/disodium hydrogen phosphate)traceable to SRM from NIST and PTB pH 7.00 (25°C) Certipur^®

Properties

• grade: certified reference material
• Quality Level: 300
• product line: Certipur^®
• pH: 7.0 (25 °C in H₂O)
• bp: 109 °C/1013 hPa
• mp: -5 °C
• density: 1.01 g/cm³ at 20 °C
• application(s): environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• format: mixture
• storage temp.: 15-25°C

Description

General description

A phosphate buffer, it is gravimetrically prepared using high-quality salts in high-purity water. The pH 7.00 of this potassium dihydrogen phosphate/disodium hydrogen phosphate is measured using a combined glass electrode following a 5-point calibration method, in accordance with DIN 19268, against certified primary reference standards as per DIN 19266.

Application

It is used in analytical procedures for the calibration, qualification, and monitoring of pH measuring instruments and as a control for testing other buffer solutions.

Packaging

1 l in Plastic bottle

4 l in Titripac PE/Alu

500 ml

Features and Benefits

• Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
• Traceable to SRMs from NIST and primary certified reference standards from PTB
• Ready-to-use solution available in a sealed bottle and an innovative Titripac^® packaging for a positive environmental impact due to reduced waste generation
• Accompanied with a detailed certificate of analysis (CoA) for an effective audit

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Titripac is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 12 - Non Combustible Liquids
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable