The Experimental system of microbial penetration in dry state is composed of gas source generation system, detection main body, control system and so on. It is used to carry out the method of dry microbe penetration resistance test on the surgical drapes, gowns and clean air suits.
The test is carried out on test pieces each fixed in a container. In every container except one a portion of talc contaminated with Bacillus subtilis is poured on the test piece. One container is left uncontaminated as a control. A sedimentation plate is inserted at the base of each container at a short distance below the test piece.
The apparatus supporting the containers is then vibrated by a pneumatic ball vibrator. The talc that penetrates is captured on the sedimentation plate. The sedimentation plates are removed and incubated.
The numbers of colonies produced are counted.
Mode of vibration
Pneumatic ball vibrator
20800 times / minute
Work table size
Stainless steel experimental container
1∮ AC 220V 50Hz
YY/T0506.2 Surgical drapes, gowns and clean air suits for patients, clinical staff and equipment - Part 2: Performance requirements and test methods;
YY/T0506.5 Surgical drapes, gowns and clean air suits for patients, clinical staff and equipment - Part 5: Test methods for resistance to dry microbial penetration;
ISO 22612 Clothing for protection against infectious agents - Test method for resistance to dry microbial penetration.