or in inner parts of the equipment where air from the room was blowing through to cool the machinery or used as a compressor (pulse oximeter, Medela suction apparatus, etc.). The spore strips were placed in the middle, in dead ends, and at the inlet
and outlet of air of the equipment. The inner parts of the items of medical equipment were accessed by medical technicians as these parts could not be reached by ordinary procedures. The positions of strips within the items of medical equipment were chosen to reflect parts that were not reached by ordinary disinfection procedures. Spore strip envelopes were either opened or unopened before the disinfection test was performed. Spore strips were removed after 18–20 h.