An in-office biological indicator (BI) system certified for use with all steam sterilization cycles. This system gives clear, easy-to-interpret results for monitoring the effectiveness of the sterilization process. Final results are known after only 24 hours of incubation in any compatible dry-block incubator operating at 55–60°C. For user's convenience, SPSmedical offers a calibrated 60°C dry-block incubator that comes with 15 wells and a lifetime warranty.