http://www.fda.gov/forconsumers/ ... ities/ucm126372.htm
Manufacturers "spot check" their condoms using a "water-leak" test. FDA inspectors do a similar test on sample condoms they take from warehouses. The condoms are filled with water and checked for leaks. An average of 996 of 1000 condoms must pass this test.
連明知美國會check的"好貨"都是4 out of 1000連水都過到, 來香港都無政府check的貸1000個有10幾20十幾連水都過到好合理. 所以1%-2%有condom如同無條數是合理的.