Tuttnauer Biological Indicators provide reliable verification of sterilization cycles by using self-contained systems with highly resistant microorganisms. Ideal for steam sterilizers, these indicators ensure compliance with industry standards and effective sterilization monitoring. Suitable for healthcare, laboratory, and industrial environments. Browse the selection below. For bulk pricing, contact us at 888-4-LABPRO (888-452-2776). Next-day service in California and same-day service for will-calls.