1.07202

Certified sec. standard reference buffer solution

potassium dihydrogen phosphate/di-sodium hydrogen phosphate, pH 6.86 (25 °C), Certipur^®

• Synonyme(s) : pH 6.86 Certified Secondary Buffer Solution
• Code UNSPSC : 41116107
• Nomenclature NACRES : NA.25

Propriétés

• Qualité: certified reference material
• Niveau de qualité: 300
• Agence: complies with DIN 19266
• Gamme de produits: Certipur^®
• Composition: potassium dihydrogen phosphate/di-sodium hydrogen phosphate
• pH: 6.86 (25 °C)
• Application(s): environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• Format: mixture
• Température de stockage: 15-25°C

Description

Description générale

The certified secondary standard reference buffer solution (potassium dihydrogen phosphate/disodium hydrogen phosphate) is gravimetrically prepared using high-quality reagents in high-purity water. Its pH value is measured by differential potentiometry with two platinum hydrogen electrodes against primary certified reference materials from NIST & PTB. It is qualified using 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 can be used to calibrate, qualify, and monitor pH measuring instruments and as a control for testing other buffer solutions.

Caractéristiques et avantages

• Available in a sealed 100 mL high-density plastic bottle
• Subjected to detailed stability studies as per ISO Guide 35
• Product label carryies relevant information on order number, article description, lot number, expiry date and safety data, in accordance with ISO Guide 31
• Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective quality management system
• 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

Remarque sur l'analyse

pH-value: 6.861 - 6.867
For complete data see the enclosed certificate

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): nwg
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable