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The STERIZONE® VP4 Sterilizer is intended for use in terminal sterilization of cleaned, rinsed, and nonmetal reusable medical devices in health care facilities. The single pre-set cycle of the STERIZONE® VP4 Sterilizer uses hydrogen peroxide and ozone. The injection of vaporized hydrogen peroxide is followed by the injection of ozone, with residual hydrogen peroxide to form hydroxyl radicals. Sterilization efficacy was demonstrated using a representative sample of one or more device types and packaging, in nine separate validation loads, as described in Table 1. The load to be processed should be maintained between 20℃ to 26℃ (68°F to 78°F). Total load weight shall not exceed 75 lb, inclusive of the containers/packaging weight but excluding the 25 1b loading rack.

The STERIZONE® VP4 Sterilizer is a versatile low temperature sterilizer using two sterilants (vaporized hydrogen peroxide [H₂O₂] and ozone [O₃]) in a multi-phase process to sterilize reusable medical instruments up to a maximum load of 75 lb. In contrast to the sterilization processes using H2O2 only and having multiple cycles, the STERIZONE® VP4 Sterilizer enables the sterilization of a wider range of instruments and load configuration with only one preset cycle. The dynamic system to distribute the sterilant ensures an adequate supply of the sterilant through multiple successive pulsed injections that adapt to the different load conditions (size, weight and temperature). The STERIZONE® VP4 Sterilizer offers a unique preset sterilization cycle (Cycle 1) to sterilize a wide range of loads consisting of general instruments, flexible endoscopes with one channel, double channels and multi-channels, and devices with rigid and semi-rigid channels, including rigid endoscopes with single or double channels.