
1/2 Gallon Premium Blue & White Mixed Indicating Silica Gel Beads(Industry Standard 3-5 mm) - 3.6 LBS Reusable
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Compared across 4 stores. Prices are checked against each store and labelled with when.

Compared across 4 stores. Prices are checked against each store and labelled with when.
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This is a half-gallon bag of reusable indicating silica gel beads, about 3.6 lbs, in a 95% white and 5% blue mix at 3–5 mm. The blue beads shift to pink at roughly 50–60% moisture uptake, so you can see when the gel is working; the beads still hold more moisture after the color change. It suits drying air lines, gun safes, filament storage, paint booths and wood drying. Compared with plain non-indicating gel, you trade a small amount of capacity for a visible moisture signal, and the low-cobalt blue beads address the health and disposal concerns of older cobalt-heavy gel.
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Lowest price we've seen: $22.99 on Nov 15 at Dry & Dry. Tracked across 2 stores since Nov 15.
This is a half-gallon supply of mixed blue and white indicating silica gel desiccant beads, about 3.6 lbs in total. The beads are 3 to 5 mm in size. The mix is 95% white beads and 5% blue beads.
The blue beads are the moisture indicator. They turn from blue to pink when they have absorbed 50-60% of their capacity, so almost half of their capacity remains after the color change. The blue beads contain less than 0.3% cobalt chloride, which may pose health and environmental risks.
The beads can be reactivated and reused. Heat them in an oven for 0.5 to 2 hours at 200-250°F, or microwave them for about 10 minutes on the defrost setting. Do not use an oven temperature over 250°F. Depending on their condition, the beads may need less time, so check their color periodically. Not for food use.