Current EN guidelines do not recommend the use of Combined species spore strips. This allows the user to transport the strip within the glassine from the sterilizer to a laminar flow hood, where it can be transferred into recovery medium . Populations of strips are typically from 1.0 X 10 n to 4.0 X 10 n .
Expiration is two years from date of manufacture.
Lot number and expiration date are printed on each glassine. Dvalues are within suggested ranges mentioned in USP and suitable for hospital use. Use of any other medium may adversely affect results. The two strips exposed in the sterilizer are to be returned to the envelope with the unexposed strip and all three are to be sent to the hospital mico lab for in-house culturing. The envelope has space for the technician to write pertinent information about the sterilizer load, contents and test results.