1.09462

Buffer solution

(boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 11.00 (20°C) Certipur^®

• Synonym(s): Buffer solution pH 11.00 (20°C) (boric acid/potassium chloride/sodium hydroxide)
• UNSPSC Code: 12161705
• NACRES: NA.25

Properties

• grade: certified reference material
• Quality Level: 300
• product line: Certipur^®
• pH: 11.0 (25 °C in H₂O)
• density: 1.01 g/cm³ at 20 °C
• application(s): environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• format: mixture
• storage temp.: 15-25°C

Description

General description

The boric acid/potassium chloride/sodium hydroxide certified buffer solution is gravimetrically prepared using high-quality reagents, in accordance with DIN EN ISO/IEC 17025, at a registered calibration laboratory. Its pH value of 11.00 at 20°C is measured following a 5-point calibration method, using a combined glass electrode. The measurement is made following DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. The pH value is strongly dependent 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 solution is meant to be used as a calibration standard for pH measuring instruments or pH electrodes and as a control for measuring the pH of solutions.

Features and Benefits

• Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
• Directly traceable to secondary reference standard from NIST and primary certified reference standard from PTB
• Ready-to-use solution
• Available in a sealed plastic bottle to prevent contamination
• 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

Legal Information

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

Safety Information

• Pictograms: GHS08
• Signal Word: Danger
• Hazard Statements: H360FD
• Precautionary Statements: P201 - P202 - P280 - P308 + P313 - P405 - P501
• Hazard Classifications: Repr. 1B
• Storage Class Code: 6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable