1.99022

Buffer Solution

(di-sodium hydrogen phosphate/sodium hydroxide) traceable to SRM from NIST und PTB pH 12.00 (25°C) Certipur^®

• Synonyme(s) : Buffer solution pH 12.0 (25 °C in H2O) (di-sodium hydrogen phosphate/sodium hydroxide)
• Code UNSPSC : 12161705
• Nomenclature NACRES : NA.25

Propriétés

• Qualité: certified reference material
• Niveau de qualité: 300
• Gamme de produits: Certipur^®
• pH: 12.0 (25 °C in H₂O)
• Densité: 1.00 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 di-sodium hydrogen phosphate/sodium hydroxide buffer solution is gravimetrically prepared at a registered calibration laboratory with high-quality reagents and water. Its pH value of 12.00 at 25°C is measured using a combined glass electrode following a 5-point calibration method. The measurement is made following DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. The buffer pH strongly depends on the temperature and therefore a constant temperature must be maintained during its use.

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 is used as a standard to calibrate pH measuring instruments or pH electrodes and as a control to measure the pH of other solutions.

Caractéristiques et avantages

• Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
• Traceable to secondary reference standard from NIST and primary certified reference standard from PTB
• Available in 30 mL sachets as a ready-to-use solution and in 4 L innovative and sustainable Titripac^® PE/Aluminum packaging for a reduced waste generation
• Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective audit
• Product label follows the ISO Guide 31 and contains information about ordering number, article description, lot number, safety data, and expiry date
• Packaging material subjected to comprehensive stability studies as per ISO Guide 35

Informations légales

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

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

Informations sur la sécurité

• Pictogrammes: GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H314
• Conseils de prudence: P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363 - P405
• Classification des risques: Eye Dam. 1 - Skin Corr. 1
• Code de la classe de stockage: 8B - Non-combustible, corrosive hazardous materials
• Classe de danger pour l'eau (WGK): nwg
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable