1.09436

Buffer solution

(citric acid/sodium hydroxide) traceable to SRM from NIST and PTB pH 5.00 (20°C) Certipur^®

• Synonyme(s) : Buffer solution pH 5.00 (20°C) (citric acid/sodium hydroxide)
• Code UNSPSC : 12161704
• Nomenclature NACRES : NA.25

Propriétés

• Qualité: certified reference material
• Niveau de qualité: 300
• Gamme de produits: Certipur^®
• pH: 5.0 (25 °C in H₂O)
• Densité: 1.01 g/cm³ at 20 °C
• Application(s): environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• Format: mixture
• Température de stockage: 15-25°C

Description

Description générale

The buffer solution (citric acid/sodium hydroxide) is gravimetrically prepared using high-quality reagents in high-purity water. It is quality controlled and qualified in an ISO/IEC 17025 accredited calibration lab. Its pH value of 5.00 at 20°C is qualified 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, IUPAC, NIST, USP, and Ph. Eur.

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

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.

Caractéristiques et avantages

• 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 with convenient packaging to protect against contamination
• Long-lasting with a shelf life of 3 years
• Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an efficient audit and successful quality management system.

Informations légales

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

Informations sur la sécurité

• Code de la classe de stockage: 12 - Non Combustible Liquids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable