Dry Biological Indicator in Strip is a product used to monitor sterilization processes by Humid Heat (steam), Dry Heat and Ethylene Oxide without incorporated culture medium. The indicators contain bacterial spores supported on a filter paper, inside a practical translucent cellulose peelable. To use the strips, simply place the envelope inside a product or package. This “inoculated package” is placed inside the sterilizer and processed. After removing from the sterilizer, the inoculated package is sent to the microbiology laboratory for transfer of the strip. In biological indicator it should be aseptically grown in a soybean casein medium and incubated at the appropriate temperature for 7 days.