1.09884

Buffer concentrate

(citrate/hydrochloric acid), traceable to SRM of NIST and PTB for 500 ml buffer solution, pH 4.00 ± 0.02 (20°C) Titrisol^®

• Synonym(s): Buffer concentrate for 500 ml buffer solution, pH 4.00 ± 0.02 (20°C)
• UNSPSC Code: 12161704
• NACRES: NA.25

Properties

• grade: analytical standard
• Quality Level: 100
• Agency: according to DIN 19266
• product line: Titrisol^®
• pH: 4.0 (20 °C, 50 g/L in H₂O)
• bp: 110 °C
• mp: -6 °C
• density: 1.06 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 Titrisol^® reference buffer concentrate [citrate/hydrochloric acid; pH=4.00±0.02 (20 °C)] is analyzed in the ISO/IEC 17025 accredited calibration laboratory with a combined glass electrode and 5-point calibration according to DIN 19268 against a certified primary standard reference material following DIN 19266. The Titrisol^® concentrated buffer material combines ease of use and maximum precision for the routine calibration and monitoring of pH instruments. To prepare the ready-to-use pH buffer solution, simply dilute the Titrisol^® buffer concentrate.

Features and Benefits

• Traceable to primary standard reference materials from NIST and PTB
• Analytical standard Grade
• Uncertainty data and traceability are documented in a comprehensive and batch-specific Certificate of Analysis.

Analysis Note

pH-value (20 °C): 4.00 +/- 0.02
Measured after dilution to 500 ml with a combination glass electrode after multiple point calibration (according to DIN 19268) with reference materials for the preparation of standard buffer solutions according to DIN 19266.

Legal Information

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

Safety Information

• Storage Class Code: 12 - Non Combustible Liquids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable