... proper size for the pouch ,which adjust to the item to ba sterilized ,or the pouch/packaging might be ... of using when open. 3,sealing the pouch/packaging with right machine,including temeperature,to make record ... ,the mark turns black after STEAM sterilization,as for EO is brown. 6,HOW to open the ... the right direction printed on the pouch/packaging 7,IF the pouch/packaging is damaged ,or polluted ,it ...