Sigma-Aldrich Buffer Solution pH 2.00 50

Grade

certified reference material

Quality Level

300

Product Line

Certipur^®

pH

2.0 (25 °C in H₂O)

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 citric acid/sodium hydroxide/hydrogen chloride certified buffer solution is gravimetrically prepared using high-quality reagents at a registered calibration laboratory. Its pH value of 2.00 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 pH value of the buffer 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 solution is used as a standard in analytical procedures for the calibration of pH measuring instruments or pH electrodes and as a control for the measurement of pH of other solutions.
It may be used to calibrate a pH benchtop meter to study the designing of hydrophobic eutectic mixtures for the extraction of volatile fatty acid extractants (VFAs)

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 a tamper-proof plastic bottle and sustainable Titripac^®packaging for a positive environmental impact
• 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

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