How much desiccant do you need? - SorbentSystems.com

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Find the Quantity of Desiccant You Need

This is desgned to cover from small packages all the way up to large corporate containers.

For bottles or small foil packages, please click here.

Example 1: You are shipping a photocopier (a medium-sized package) with dimensions 4' x 3' x 2' = 24 cubic feet. You estimate that the copier takes up 75% of the space inside the package, but to be conservative, you say 70%. This means that the remaining 30% is free space, and that is 7.2 cubic feet (12442 cubic inches) and the table tells you that you need 9 units of desiccant. We recommend buying three 4-unit desiccants so you are absolutely certain that you have enough, and maybe a little to spare.

Example 2: You are shipping a large, custom-built machine/vehicle/power panel which is usually done by a crating company. The container's volume is 176,000 cubic inches, and the contents take up 30% of the package. This means the free space is 123,200 cubic inches, and the table tells you that you need more than 80 units of desiccant.

Container Size					Desiccant Required
Square Feet	Square Inches	Gallons	Cubic Feet	Cubic Inches
0.1	15	1.1	0.14	237	1/6
0.2	30	2.1	0.28	476	1/3
0.3	45	3.2	0.42	714	1/2
0.6	90	6.2	0.83	1428	1
1.3	180	12.5	1.67	2856	2
1.9	270	18.7	2.50	4284	3
2.5	360	25.0	3.33	5712	4
3.1	450	31.2	4.16	7140	5
3.8	540	37.4	5.00	8568	6
4.4	630	43.6	5.83	9996	7
5.0	720	50.0	6.66	11424	8
5.6	810	56.1	7.50	12852	9
6.3	900	62.3	8.33	14280	10
7.5	1080	74.8	10.00	17136	12
8.8	1260	87.3	11.66	19992	14
10.0	1440	99.7	13.32	22850	16
20.0	2880	199.4	26.64	45700	32
50.0	7200	498.5	66.65	114250	80
100.0	14400	997.0	133.30	228500	160
120.0	18000	1240.0	166.00	285600	200
150.0	22500	1550.0	207.00	357000	250

If you have any questions, please email us.

Please note that a unit of desiccant refers to its drying capacity, not its volume. A unit (approximately one ounce) is the amount of desiccant that will absorb at least three grams of water vapor at 20% relative humidity and at least six grams of water vapor at 40% relative humidity at 77 degrees F (25 degrees C).

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