The RH calibration kit includes the following items:
- three clear, sealable containers
- one container with magnesium chloride solution
- one container with sodium chloride solution
- two wooden scrapers
- an insulated carrying case to hold all of the above and maintain a stable environment while performing calibration
The large container is used to create a stable environment. The small containers are used to hold the saturated salt solution. The saturated salt solutions generate well-defined humidities when they are confined to a contained environment.