Where loads cannot tolerate the temperatures, pressures and moisture of steam sterilisation Fedegari offer a range of systems using which achieve decontamination using chemical sterilants. Treatment takes place in specially designed chambers, different chemical process are available

• Vapourised hydrogen peroxide is an oxidant which has been used as a sterilant for over 20 years. Fedegari units use dry compressed air and vacuum air removal to substantially accelerate the attainment of required humidity, then aeration with the benefit of reduced cycle times. Fedegari H2O2 sytems have been developed on the long experience in this field of BioCom SrL.
• As a true gas, Chlorine Dioxide disperses more reliably than H2O2, its effectiveness is less susceptible to condensation issues or temperature gradients. Fedegari ClO sytems have been developed in conjunction with ClorDiSys Solutions Inc.
• Peracetic Acid (CH3CO3H) is another oxidising sterilant, first registered as an antimicrobial in 1985 for indoor use on hard surfaces. Distributed as a dry fog through specially developed nozzles, it exhibits the Brownian motion of a gas, substantially aiding dispersion.

Fedegari decontamination units can offer any of the above (and potentially be equipped to handle all three if necessary). In all cases management is by the versatile Thema 4 controller which meets all the specialist demands of controllers in the pharmaceutical industries. The safety considerations attendant with pressurised steam are replaced by those of safely handling oxidising vapours.

In addition, Fedegari have long experience of supplying Ethylene Oxide (EtO) sterilisers. However, this involves long cycles, the gas is explosive, toxic and carcinogenic, and the use of inert CFCs as a carrier gas has ceased so EtO is rarely specified these days.