Humidity Indicator Card Series
The Humidity Indicator Card (HIC) is mainly applied in semiconductor,
PCB, military supplies, medicine, warehouse stock and other packages.
HIC is a kind of visible card. Each dot on the card points one special
relative humidity degree. The dot color will change along with the RH
degree from blue to pink (common cobalt-containing HIC) or brown to
green (cobalt-free HIC). This changing helps decide the inside RH degree
and confirm whether the desiccant should be replaced or not. The
commonly-used types are 5-10-60%, 30-40-50%, and 10-60% etc. Special
specification can be customized. It is usually used together with moisture
barrier bag and desiccant.