Biological Indicators
By ThermoWork with any steam sterilizer

Verify the sterility of your instruments, vials, media, liquid cycles and other products in less time than it takes to send samples to an outside lab. Results proven in 48 hours and for up to 60% less than the cost of outside laboratory sterility tests. An obvious color change from purple to yellow indicates an ineffective sterilization process. Two biological indicators to choose from: one for media and liquids, the other for instruments, glassware and other applications.
For media and liquids, use Sterilamp II Biological Indicators with spore populations of 106. Available in boxes of 25 or 100.
For instruments, glassware and other, use B/T Sure Biological Indicators with spore populations of 105. Other spore populations are available upon special request. Comply with current AAMI and ISO standards.