General
pH value	1,68 bei 25 °C
Deviation	± 0,02

The NIST pH buffer solution pH 1.68 from Chauvin Arnoux serves as a reference material for precise calibration and fine adjustment of pH measuring instruments and measuring electrodes. The solution is supplied as a ready-to-use product in a 125-ml bottle and is delivered with a reference material certificate. It is specifically designed for applications requiring high measurement accuracy and traceability, such as in laboratory environments, the chemical industry, or environmental analysis.

Applications

The buffer solution is intended for the calibration and fine adjustment of pH meters and measuring electrodes. It is particularly suitable for demanding measurement tasks where high accuracy and reproducibility of results are required. Traceability to an international system ensures high measurement reliability and enables compliance with quality standards in scientific and industrial processes.

Functions and Equipment in Detail

The solution has a guaranteed pH value of 1.68 at a temperature of 25 °C, with a deviation of maximum ± 0.02. This value is especially relevant for calibrating pH measuring devices in acidic ranges. The solution is ready to use without requiring additional preparations such as dilution or mixing. The included reference material certificate documents traceability and conformity with international standards.

Technology Explained Simply

The pH buffer solution stabilizes the pH value of the solvent, ensuring it remains constant under various conditions. This is crucial for calibration, as measuring devices can be adjusted to a known, stable value. Traceability means that the calibration can be linked to an international reference, enabling comparability of measurement results worldwide. The solution is specified for use at 25 °C, as the pH value is temperature-dependent and the specification at this temperature represents the standard condition for calibrations.

Compatibility and Accessories

The buffer solution is suitable for all pH measuring instruments and measuring electrodes that require calibration with a pH value of 1.68. It is part of a calibration and validation process that is standardized in many industries. The solution is used directly from the bottle without requiring additional accessories.

Mounting and Installation

The buffer solution requires no mounting or installation. It is taken directly from the 125-ml bottle and added to the measuring device or measuring electrode to perform the calibration. The bottle is designed to protect the contents and ensure shelf life.

Advantages in Operation

The ready-to-use nature of the solution reduces effort during calibration and minimizes sources of error. The high accuracy of the pH value of 1.68 ± 0.02 ensures reliable measurement results. Traceability to international standards increases the acceptance of measurement results in certified processes. The shelf life is 18 months before opening, and after opening, the solution remains usable for 2 months, allowing for flexible use.