BUFFER SOLUTION TRACEABLE TO SRM FROM (C005B-093411)

General description

Certipur^® buffer solution [di-sodium hydrogen phosphate/potassium dihydrogen phosphate buffer; pH 6.88 (20 °C)] is intended for use as a calibration standard for pH instruments or pH electrodes or as a control sample for measuring the pH value.

The ready-to-use Certipur^® buffer solutions are prepared gravimetrically in our ISO/IEC 17025 accredited calibration laboratory from high-purity salts, acids and bases diluted in high-purity water. All balances are regularly calibrated with analytical weight sets traceable to primary standard reference materials from NIST and PTB. The pH-value is measured to the highest precision using a combined glass electrode after 5-point calibration (according to DIN 19268) against reference buffer solutions (according to DIN 19266, IUPAC, NIST, Ph.Eur. and USP).

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.

Features and Benefits

• Compliant: Produced according to EP and USP guidelines
• Secure: Tested in our ISO 17025 accredited calibration laboratory
• Ready for audits: Detailed certificate of analysis for every product
• Convenient: Simply open the pack for quick, accurate pH calibration

Legal Information

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

grade: certified reference material. Quality Level: 300. Agency: traceable to NIST, traceable to PTB. product line: Certipur^®. . composition: di-sodium hydrogen phosphate/potassium dihydrogen phosphate . pH: 6.88 (20 . °C). application(s): environmental
food and beverages
general analytical
industrial qc
pharmaceutical. format: mixture. storage temp.: 15-25°C. Storage Class Code: 12 - Non Combustible Liquids. WGK: nwg. Flash Point(F): Not applicable. Flash Point(C): Not applicable.