Used in Vacuum steam sterilisation processes checking leaks, non condensable gases (NCG) and / or insufficient air removal and to assure steam penetration. the BDS indicator strip is placed into the BDS test device and sterilized in an empty chamber at 121 , 15 min or 132-134 3-3.5 mi (BD Program). Air removal and steam penetration test. European Version simulating 7kg cotton pack according to EN ISO 11140-4 and hollow load test according to EN 867-5. Test Device only.