Check that your moisture meter pin is worth its salt with this saline solution pot from Testo. The control container produces an air mixture with a relative humidity of 33%, so you can reference your humidity probe against it and ensure spot-on testing results. This product is compatible with Testo's 645 range of humidity probes and measuring instruments that let you precisely determine temperature, dew point and relative humidity levels.

• Comes pre-filled to maximise shelf life
• Sensor screws into the container for a secure hold during testing
• Long service life of approximately two years if properly sealed when not in use

• Warehouses and packaging facilities
• Medical and pharmaceutical industries
• Commercial buildings

The Testo salt pots for checking humidity sensors.

33% RH

For best results, use this testing pot in temperatures between +20°C and +30°C.