Moisture Indicators • Easy determination of moisture in air • This test is used for the quick and easy determination of the relative atmospheric humidity. • The paper is simply exposed to the atmosphere in question. • When the colour of the pad does not change anymore, the humidity can be read off. • Moisture sensitive goods e.g. electronics and optical systems have to be stored at low atmospheric humidity. • They are usually packed in sealed plastic bags together with a desiccant. • Moisture indicators are used to control if the desiccants is active and if moisture is effectively kept away from the goods. • Presentation: Box of 12 adhesive labels • Colour change: pink ↔ blue • Sensitivity: 20 · 30 · 40 · 50 · 60 · 70 · 80 % r.H.