Indicating Silica Gel adsorbs (not absorbs) water vapour from the air. This means it traps moisture on its surface without swelling or becoming wet. It can adsorb up to 30% of its own weight in water vapour.
How does Indicating Silica Gel work?

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Christmas closing period Friday 19th December, and we will re-open 5th January, don’t forget to get your order in quickly to avoid delays
Testing for Yollie
Indicating Silica Gel adsorbs (not absorbs) water vapour from the air. This means it traps moisture on its surface without swelling or becoming wet. It can adsorb up to 30% of its own weight in water vapour.

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