B-D Test Pack Test:Picture Study and Failure Analysis
Shanshan Hu · 2005
OBJECTIVE To improve the reading efficiency and accuracy of B-D test, we have studied and analyzed the failure causes. METHODS Group A adopted 3M′s Standard B-D Test Pack and the test result was studied every odd month; Group B used the standard self-made degreased pure cotton test pack and the test result was studied every even month. Group A and group B had carried out the B-D test 720 times together and the test qualification rate was studied. RESULTS Group A had failed 5 times, which were all caused by equipment or steam issues. Group B had failed 36 times, among which, 4 times were caused by the equipment, one was by the steam and the left 31 times were by operators. Obviously, the qualification rate of group A was higher than that of group B. CONCLUSIONS 3M′s Standard Test Pack isn't affected by operators, qualification rate is high, and can help judge the remnant cold air focus accurately during the sterilization process of the Steri-Vac.