3 Cubic Feet EO Sterilizer

It effectively processes delicate items such as endoscopes, catheters, syringes, pacemakers, rubber gloves, plastic tubing, infusion sets, hypodermic syringes, surgical packs, urinary drainage bags, cardiac catheters, vascular stents, intraocular lenses, and diagnostic scopes. It is also used for reducing bioburden in heat-sensitive consumables like spices, dry nuts, packaged grains, and cereals.

EO gas (often blended with inert gases like CO₂ or nitrogen for safety) penetrates complex packaging, lumens, and porous materials. It alkylates microbial DNA and proteins, eliminating bacteria, viruses, fungi, and resistant spores at low temperatures around 50°C in a dry environment. The process includes vacuum/pressure cycles, gas exposure, and built-in aeration/degassing.

A complete validated sterilization and degassing cycle averages approximately 8 hours from start to finish. Warm and cold cycles are possible, with in-built aeration to safely remove residual gas.

Product-contact surfaces and the internal chamber are fabricated from premium AISI 304 or 316 stainless steel for corrosion resistance and sterile compliance. The unit features a robust, expandable framework, vacuum and pressure operation (up to about 1.5 kg/cm²), and a sealed door (manual or automatic) often with exhaust provisions.

Both options are available. Semi-automatic models use a rugged analog push-button interface for operator-controlled phases. Fully automatic models use a PLC with an intuitive touch-screen HMI for automated parameter tracking, programmed recipes, real-time monitoring (temperature, humidity, pressure, gas concentration), data logging, and safety interlocks.

It is designed with explosion-proof features, static electricity safeguards, emission controls, and compliance with relevant standards including ASME pressure vessel codes, FDA, EPA, OSHA (29 CFR 1910.1047), and ISO 11135 for residual limits. Optional complete IQ, OQ, and DQ validation documentation packages support regulatory audits. Aeration extends off-gassing for residual safety.

Key advantages include excellent material compatibility for heat-sensitive plastics, electronics, and complex devices; sterilization of items in final sealed packaging; a compact footprint suitable for limited spaces with practical batch sizes (typical loads of 10–20 lbs); high efficacy achieving a Sterility Assurance Level (SAL) of 10⁻⁶; and versatility across hospitals, pharmaceutical production, dental implant packaging, and veterinary equipment.

It typically requires compressed air (around 100 psig). Power supply is in the range of 1–2.5 kW depending on the exact model variant, usually at 220 volts single-phase 50 Hz (adjustable to local voltage requirements). Gas is supplied via cartridges (e.g., around 40–100 grams depending on capacity).

It is produced by a specialized Indian manufacturer of pharmaceutical and hospital sterilization equipment. While focused on the compact ~3 cubic feet size, the lineup includes standard and custom capacities scaling from smaller units up to much larger industrial systems (0.5 to 40 cubic meters). Related model examples in the series include capacities around 2.6, 4.5, and 8 cubic feet.