Rechargeable Desiccants | McMaster-Carr

	For Area For Area

	Absorption Indicator Absorption Indicator

Yes

	Reactivation Method Reactivation Method

Plug In

Oven

	Desiccant Type Desiccant Type

Canister

Bulk

	Removal Capacity Removal Capacity

Up to 25% of desiccant
weight

Up to 6% of desiccant weight

Up to 22% of desiccant
weight

Up to 23% of desiccant
weight

	Desiccant Material Desiccant Material

Silica Gel

Anhydrous Calcium Sulfate

	Weight Weight

	Reactivation Time Reactivation Time

	Reactivation Temperature Reactivation Temperature

255° F

425° F

450° F

	Width Width

4 3/4"

5 1/2"

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Length Length

6 1/4"

16"

	Depth Depth

1 1/4"

2 1/2"

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	OD OD

7 Products

Rechargeable Small-Space Dehumidifiers

Place these dehumidifiers in small spaces to protect moisture-sensitive materials such as photo lenses or 3D printing filaments. They absorb moisture with a silica gel that changes color, letting you know when they’re saturated. While they don’t need a battery or power cord during use, you do plug them in to dry them out—unlike other desiccants, they don’t require an oven.

						Reactivation
For Area, cu. ft.	Removal Capacity	Lg.	Wd.	Dp.	Wt., oz.	Method	Time, hrs.	Housing Material	Plug Type		Each
Silica Gel
333	Up to 25% of desiccant weight	6 1/4"	4 3/4"	1 1/4"	24	Plug In	12	Plastic	Two Prong	000000	000000
500	Up to 22% of desiccant weight	8"	5 1/2"	2 1/2"	35	Plug In	15	Plastic	Two Prong	000000	00000

Indicating Bulk Desiccants

Know when it's time to reactivate these desiccants—they turn from blue to pink after absorbing 6% of their weight.

The area covered is calculated at 77° F and 40% relative humidity.

			Reactivation
For Area, cu. in.	Removal Capacity	Wt., lbs.	Method	Temperature, °F	Time, hrs.		Each
Silica Gel
23,025	Up to 23% of desiccant weight	1	Oven	255°	12	0000000	000000
115,175	Up to 23% of desiccant weight	5	Oven	255°	12	0000000	00000
230,350	Up to 23% of desiccant weight	10	Oven	255°	12	0000000	000000

Desiccant Canisters

Stored in a durable canister, these desiccants can be reactivated after use.

The area covered is calculated at 77° F and 40% relative humidity.

					Reactivation
For Area, cu. in.	Removal Capacity	Lg.	Wt.	OD	Method	Temperature, °F	Time, hrs.	Canister Material		Each
Anhydrous Calcium Sulfate
10,375	Up to 6% of desiccant weight	6"	5.3 oz.	1 1/2"	Oven	425°	1	Aluminum	0000000	000000
345,600	Up to 6% of desiccant weight	16"	10 lbs.	4 1/2"	Oven	450°	3	Aluminum	0000000	000000