| Humidity Indicator Cards Humidity indicator card (HIC) is a card on which a moisture-sensitive chemical is impregnated such that it will change color when the indicated relative humidity is exceeded. This item is an inexpensive way to quantify relative humidity levels inside sealed packaging. They are available in many configurations and used in many applications, especially military and semiconductor. The most common humidity indicator cards change color from blue (less than indicated RH level) to pink (greater than indicated RH level). The base chemical is cobalt(II) chloridedity Indicator Cards : However cobalt-free type are also available. For semiconductor packaging, HICs are packed inside a moisture-sensitive bag, along with the desiccant, to aid in determining the level of moisture to which the moisture-sensitive devices have been subjected. Moisture sensitivity levels are indicated with a number as in the MSL list View or download file |
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