Sterile Polynit Heatseal wipes are processed in Contec's ISO Class 4 cleanroom laundry, then sterilized by gamma radiation and Validated Sterile to a Sterility Assurance Level (SAL) of 10-6 in accordance with standards and practices of the Association for the Advancement of Medical Instrumentation (AAMI). This means there is less than a one in a million probability that the product contains a microorganism. Heat-sealed edges prevent the release of particles and fibers. Sterile Polynit Heatseal Wipes are double bagged with an embossed lot number on both inner and outer bags for lot traceability. Ultra-clean, low-shedding polyester wipes are ideal for use in ISO 5 Secondary Engineering Controls (SECs).