Sigma-Aldrich Buffer Solution Traceable

Grade

certified reference material

Quality Level

300

Product Line

Certipur^®

Ph

9.0 (25 °C in H₂O)

Bp

100 °C/1013 hPa

Density

1.00 g/cm³at 20 °C

Application(S)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

Format

mixture

Storage Temp.

15-25°C

Related Categories

Physical & Chemical Property Standards

General Description

The boric acid/potassium chloride/sodium hydroxide certified buffer solution is gravimetrically prepared using high-quality reagents and water at a registered calibration laboratory. Its pH value of 9.00 at 25°C is calculated using the 5-point calibration method with 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 buffer’s pH value 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

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

Features And Benefits

• 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
• Ready-to-use solution available in 30 mL sachets
• 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
• Accurate up to +/- 0.03 at 25°C

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, GermanyGHS08H360FDP201 - P202 - P280 - P308 + P313 - P405 - P501