1.99038

Buffer solution

(boric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 8.00 (25°C) Certipur^®

• Sinónimos: Buffer solution pH 8.0 (25 °C in H2O) (boric acid/sodium hydroxide/hydrogen chloride)
• Código UNSPSC: 12161703
• NACRES: NA.25

Propiedades

• grado: certified reference material
• Nivel de calidad: 300
• Línea del producto: Certipur^®
• pH: 8.0 (25 °C in H₂O)
• densidad: 1.00 g/cm³ at 20 °C
• aplicaciones: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• formato: mixture
• temp. de almacenamiento: 15-25°C

Descripción

Descripción general

The boric acid/sodium hydroxide/hydrogen chloride buffer solution is gravimetrically prepared at a registered calibration laboratory with high-quality reagents and water. Its pH value of 8.00 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 is temperature dependent 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.

Aplicación

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.

Características y beneficios

• 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 a secure 500 mL plastic bottle 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

Información legal

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

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

Información de seguridad

• Pictogramas: GHS08
• Palabra de señalización: Danger
• Frases de peligro: H360FD
• Consejos de prudencia: P201 - P202 - P280 - P308 + P313 - P405 - P501
• Clasificaciones de peligro: Repr. 1B
• Código de clase de almacenamiento: 6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Clase de riesgo para el agua (WGK): nwg
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable