Sigma-Aldrich Buffer Solution Traceable

Grade

certified reference material

Quality Level

300

Product Line

Certipur^®

pH

4.7 (20 °C in H₂O)

Density

1.00 g/cm³at 20 °C

Application(S)

environmental
food and beverages
general analytical
industrial QC
pharmaceutical

Format

mixture

Storage Temp.

15-25°C

Related Categories

Physical & Chemical Property Standards

General Description

Also known as an acetate buffer, it is prepared gravimetrically with acetic acid, sodium acetate, and high-purity water. This acetic acid/sodium acetate buffer is analyzed 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. 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.

Application

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

Features And Benefits

• Measured and qualified in a 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 with convenient packaging to protect against contamination
• Long-lasting with a shelf life of 3 years
• Accompanied with a detailed certificate of analysis (CoA) for an effective audit

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