General
Shelf life after opening	3 Monate

The NIST-pH buffer solution pH 7.00 from Chauvin Arnoux is a high-precision reference material, specifically developed for the calibration and fine-tuning of pH meters and measurement electrodes. The product ensures a defined pH value of 7.00 at a temperature of 25°C, with a maximum deviation of ± 0.02. This high accuracy makes the solution particularly suitable for applications in laboratories and industrial environments where reliable and reproducible measurements are required. Traceability to international standards, particularly to the NIST system, ensures the quality and comparability of measurement results across different facilities.

Reference material for pH measurements is essential to eliminate systematic errors in measurement technology. The buffer solution is ready to use immediately, without requiring additional preparation or dilution. It is supplied in a practical 125-ml bottle designed for safe transport and storage. The packaging protects the solution from external influences and ensures the stability of the chemical composition until use.

Applications include the calibration of pH measurement devices in the chemical industry, food technology, environmental analysis, and research laboratories. The solution serves as a reference point to check the accuracy of measurement devices and adjust them if necessary. The use of a certified reference material increases the reliability of measurement results and supports compliance with quality standards.

Functions and equipment in detail include precise pH value definition at 25°C, traceability to international standards, and inclusion of an official reference material certificate. The certificate documents manufacturing conditions, measurement uncertainty, and traceability, which is important for validating measurement results in certified environments. The solution is suitable for storage for up to 36 months before opening. After opening, it remains stable for 3 months if stored under appropriate conditions.

Technology explained simply means that the buffer solution maintains a constant hydrogen ion concentration, which remains independent of external influences such as temperature fluctuations within the specified range. The pH value definition of 7.00 corresponds to a neutral pH value, serving as a reference point for many calibration processes. The small deviation of ± 0.02 ensures that the solution delivers consistent results even with repeated use.

Compatibility and accessories refer to use with pH meters and measurement electrodes designed for calibration with standard buffer solutions. The solution is not specific to any particular device but is universally applicable, provided the devices support calibration with pH 7.00.

Mounting and installation are not required, as this is a liquid reference solution. Use involves simply immersing the measurement electrode in the solution and then calibrating the device according to the pH meter’s operating instructions.

Operational advantages include high accuracy, immediate readiness for use, and long shelf life. Traceability to international standards enables uniform evaluation of measurement results, which is particularly important in certified laboratory environments. Packaging in 125-ml bottles provides a practical quantity for frequent calibrations without excessive consumption.

The product is delivered in a 125-ml bottle, including an official reference material certificate. The delivery scope thus includes 1 x NIST-pH buffer solution 125 ml and 1 x certificate for reference material.