*Silica Gel* = but different from "SOHU SILICA" powder
Silica Gel is *porous silicon dioxide* made into beads or granules. It doesn’t dissolve and is used to absorb moisture.
# *1. Quick Facts*
**Property** **Detail**
**Look** Clear/white beads, granules, or packets
**Main job** Desiccant - absorbs moisture from air
**Capacity** Absorbs ~40% of its weight in water
**Reusable** Yes. Heat at 120°C for 1-2hrs to dry it out
**Non-toxic** But "Do Not Eat" - it’s not food
# *2. Main Types*
1. *Indicating Silica Gel* - Orange or Blue beads
Turns green/pink when saturated. Easy to know when to dry it
2. *White/Non-indicating* - Plain white beads
Cheaper. No color change
3. *Food Grade* - Used in food, drugs, vitamin bottles
Meets FDA standard
4. *Industrial Grade*