Dr Despite advice to the contrary, a helix coil device like this must be used every morning in an otherwise empty chamber to test air removal and steam penetration prior to sterilisation of regular live loads. This is a mandatory requirement of both relevant Australian Standards; AS/NZS 4815 at 7.7.1 The correct functioning of sterilizers that use mechanical means of air removal shall be established on each day of use, prior to being used to process loads AS/NZS 4187 at 8.7.1 Sterilizing equipment shall be checked that it is functioning as intended each day, prior to being used for sterilization of RMDs Dr Jeremy Rourke