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<br /> <br />IVlasimum Allowable Pressure Drop <br />ivlaterial Field Test (after five minutes) <br />30 mil 3 PSI <br />40 mil 3 PSI <br />60 mil 3 PSI <br />80 mil 3 PSI <br />100 mil 3 PSI <br />Note 1: At all times before heat sealing the end of the seam, the operator should ensure <br />that the void or air channel is free of obstruction. This is obtained by allowing <br />air pressure to travel freely to the opposite end of the pressure gauge/needle <br />assembly. <br />52 <br />