testo 0554 0660 salt solutions are used to check humidity probe performance.

11.3 percent RH
75.3 percent RH

Humidity probe adapter

Accurately calibrate your humidity probes with this moisture meter pin set from Testo. It consists of two control containers with saturated LiCl and NaCl salt solutions. These solutions produce air mixtures that have known relative humidity values of 11.3% and 75.3% respectively, letting you reference your measuring tools against them. This helps you to ensure the accuracy of your probes for precise results.

• Supplied with adapters to accommodate different probe types
• Polystyrene holder for effective temperature regulation during calibration
• Minimum and maximum markings on the container for quick and simple liquid level monitoring

• Oil and gas plants
• Chemical laboratories

Before you calibrate your probes in the salt solution, ensure that they're free of dirt and fitted securely to the measuring instrument.