Humidity indicator cards in 1-point, 3-point and 6-point versions for monitoring moisture in electronics and industrial packaging. Bulk pricing available.
A humidity indicator card doesn't remove moisture — it shows it. Cobalt-free indicator spots change color at fixed relative-humidity thresholds, giving you and your customer a visible record of conditions inside the package.
Cards are read through the transparent barrier bag without opening it. Pair with desiccant inside a sealed MBB (moisture barrier bag) for electronics, semiconductors, and precision components. Threshold values and card dimensions are confirmed at inquiry — tell us your standard.