Things You'll Need
Instructions
Strip the canopy of anything attached to it, including any deployment bags, risers and steering toggles.
Fluff the canopy.
Place the canopy in the chamber. Round canopies should be placed in the canister apex first whereas square canopies should be placed into the canister cylinder tail first.
Insert the piston on top of the canopy and add all 210 pounds of weight. Leave the weights in place for thirty seconds.
Remove all but 70 pounds of the weight. Let the weight stabilize for thirty seconds and then measure the displaced volume to the nearest 1/16th of an inch.
Repeat the measurement process at least five or six times. Throw out the high and low number and average the remaining numbers for a volume figure.