Buffer solution

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一般描述

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 ℃ 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.

应用

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)

特点和优势

• 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

法律信息

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

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