Humidity Indicator How to Control the Humidity Level in Packagings
Propagroup’s Propasecard is a stiff card, “cobalt-dichloride free”, with reversible reading spots of the relative humidity (HR), changing the color from blue to rose when a relative humidity level has been exceeded.
The humidity indicator has to be put into the packaging of the product that you want to control and it is available in several versions. It can monitor low relative humidity levels down to a 5 % HR or high levels up to a 95 % HR, according to the application and necessity.
Propasecard has several applications in the chemical and pharmaceutical fields, all over is necessary to control humidity level, because it provides visual proof of the level of HR in an environment and/or packing. If the card indicates high humidity levels, users know that the desiccant must be replaced and the product checked.
It is normally used with desiccants in any application where humidity is at a critical point that can affect the manufactured product.
The humidity indicator is easy to use and quickly readable. Spots are blue in absence of moisture and they turn to pink at the reaching of different indicated humidity levels.
Propasecard with viewing window can be put in protective bags and caps too, in order to control the relative humidity rate inside the packaging looking from outside.