Features: 14 vial. Provide optimal conditions for the accurate readout of Attest biological indicators. Available in 14- and 28-vial capacities to meet the needs of both small and large facilities. Automatically crushes vial to release growth media, making it safer and easier to use than other systems. See-through cover allows for easy observation and reading of indicator color change. Dry-block design pre-set to proper incubation temperature to assure consistent, accurate readout results.