Humidity Indicator Card 3 spot 25 Pcs Pk
Reading 30% 40% 50 % humidity
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Cobalt series humidity indicator Cards 100 pcs
High sensitivity, accurate indication: Indicator containing CoC12 is very sensitive to humidity.
Obvious effects in color change: Cobalt containing series humidity indicator is blue when dry, and changes into pink after absorbing moisture, the contrast effect between different colors is very obvious.
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