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This is desgned to cover from small packages all the way up to large corporate containers.
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 (ft2) | Container Size (in2) | Vol Empty (Gal) | Vol Empty (ft3) | Vol Empty (in3) | Desiccant Required |
| 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 |
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).