General
Conductivity at 25 °C, 50-fold	2770 µS/cm
Conductivity at 20 °C, 100-fold	1280 µS/cm
Conductivity at 25 °C, 100-fold	1410 µS/cm
Deviation	± 1 %
Shelf life after opening	3 Monate

The conductivity reference material from Chauvin Arnoux is a concentrated standard solution, specifically developed for the calibration of conductivity measuring instruments in laboratory and industrial applications. The solution consists of potassium chloride (KCl) at a concentration of 1 mol/L and is supplied in a 125-ml bottle. Before use, it must be diluted with pure water to achieve the desired conductivity. The solution allows for various dilution factors, including 10-fold, 50-fold, 100-fold, and 1000-fold, making it adaptable to different measurement requirements. The deviation is ± 1 %, ensuring high precision for calibration purposes.

Applications

The reference material is used in applications requiring precise calibration of conductivity measuring instruments. This includes laboratory environments, industrial process monitoring, and quality control in the chemical and pharmaceutical industries. The solution is suitable for devices measuring the conductivity of liquids at various concentrations and serves as a reference point for verifying the accuracy of measuring instruments.

Features and Equipment in Detail

The concentrated solution is supplied in a 125-ml bottle designed for safe transport and storage. The solution is shelf-stable for up to 24 months before opening and remains stable for up to 3 months after opening, provided it is properly sealed and stored in an appropriate location. Dilution is performed by mixing with pure water, with the exact dilution factor chosen according to requirements. The solution is suitable for creating standard solutions with defined conductivity values.

Technology Explained Simply

The conductivity of the diluted solution depends on the dilution factor and temperature. At 25 °C, a 10-fold dilution results in a conductivity of 12.88 mS/cm, while at 20 °C the value is 11.67 mS/cm. A 50-fold dilution yields 2770 µS/cm at 25 °C and 2510 µS/cm at 20 °C. A 100-fold dilution results in 1410 µS/cm at 25 °C and 1280 µS/cm at 20 °C. At 1000-fold dilution, the conductivity is 147 µS/cm at 25 °C and 133 µS/cm at 20 °C. These values enable precise calibration under various conditions. The deviation of ± 1 % ensures that measurement results fall within a narrow tolerance range.

Compatibility and Accessories

The reference material is compatible with all conductivity measuring instruments calibrated with standard solutions. No special accessories are required, as the solution is directly diluted with pure water. Usage is independent of specific device models, as long as the instruments can detect and calibrate to the required conductivity values.

Installation and Mounting

The solution requires no mounting or installation. It is taken directly from the bottle and mixed with pure water in the desired dilution factor. The exact amount of solution and water must be calculated according to requirements to achieve the correct conductivity. Dilution is performed in a suitable container that must be clean and free from contamination.

Operational Advantages

Using the reference material enables reliable and repeatable calibration of conductivity measuring instruments. The high precision with a deviation of ± 1 % ensures trustworthy measurement results. The long shelf life before opening (24 months) and stability after opening (3 months) reduce the need for frequent reordering. The flexible adaptation to various dilution factors expands application possibilities and enables calibration across different measurement ranges.

Scope of Delivery

The product is delivered as 1 x conductivity reference material 125 ml. It is a concentrated standard solution in a 125-ml bottle, which must be diluted with pure water before use.