Biological indicator vials are easy to use and interpret with visual color readout Design provides a maximum challenge to various steam sterilization cycles. A spore burden beyond the average bioburden (germ count) provides an extra margin of safety. Optimized media promote rapid growth of spores. Definitive color change of the media indicates sterilization process ineffectiveness. Quick verification time of 24 or 48 hours versus one-week, mail-in services. Self-contained biological indicators significantly reduce possibility of contamination, minimizing false positives and assuring more accurate results Cap Color : Brown Non-Latex Shelf Life :730 Days