Humidity Indicator Card (HIC)

HIC allows fast visual inspection of the Relative Humidity (RH) in sealed packaging and containers. As the humidity increases, the chemically impregnated spots will be changed traditionally from blue to pink (Cobalt-HIC), blue to pink (CDF-HIC), brown to green (CB-HIC), yellow to green (CF-HIC) and green to purple (MF-HIC). Our HICs have 3 spots or 6 spots, but we also have a one spot type. It contains 3 spots, but only one spot is chemically impregnated and other two spots are just printed with reference colors for “OK” and “NG” (not good) so that user can easily check if it is failed or passed according to acceptable preset limit (ex. Semiconductor -10% RH, PCB/LED – 30% RH, etc.) in each industry.
We also have a plug type in round shape different from most other square designs in the market. Especially, if we use it with a specially designed plug case, it will become a lot easier and effective to check the humidity conditions inside of the bags without opening them.

  • Eco-friendly products
  • Various types and designs (custom sizes and designs are also available on request)
  • Meet MIL-I-8835A&IPC/JEDEC J-STD-033B.1
  • Indication of warning point (option)

Product Enquiry


Standard type (3 spots, 6 spots)

Cobalt-HIC (Regular type)

Cobalt Dichloride Free-HIC (CDF type)

Cobalt Free-HIC (CB type)

Cobalt & Heavy Metal Free-HIC (MF type)

Cobalt & Heavy Metal Free-HIC (CF type)


Color Change Cobalt Dichloride
Free (CDF)
Cobalt Free (CF) Heavy Metal Free (HMF) Size (mm) Indications Packing
3 spots 6 spots 3 spots 6 spots 3 spots 6 spots
Cobalt-HIC Blue-Pink 50×75
10 ~ 60% 125 pc/tin or
AMBB, 40 tins or
AMBBs / carton
200 pc/tin or
AMBB, 20 tins or
AMBBs / carton
CDF-HIC Blue-Pink 0
CB-HIC Brown-Green 0 0
CF-HIC Yellow-Green 0 0 0
MF-HIC Green-Purple 0 0 0


Round type

One spot type


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