What do we mean by “Zero Emissions”?
Andersen Sterilizers offers the most efficient gas sterilizers on the market to day. When combined with our optional emissions abatement system, an Andersen sterilizer will release a fraction of a gram of EO per cycle, and less than a pound of total emissions per year, effectively making the process zero emissions.
Family owned and operated, always manufactured here in the United States, we are dedicated to protecting your patients and our environment.
IN THIS PAGE:
Andersen’s unique EO-FCT technology and Zero Emissions abatement system
Why our EO-Flexible Chamber Technology (EO-FCT) sterilizers use minimum gas
Traditional EO sterilizers use metal chambers that result in significant “dead space” even when fully loaded. These systems must use large amounts of EO to achieve a high gas concentration throughout the chamber. Andersen EO flexible chamber technology offers a much more efficient process.
Andersen sterilizers employ flexible bags as their sterilization chamber. The bag is filled with items to be processed along with a single use EO cartridge. The bag is sealed and loaded into the sterilization cabinet. At the start of the cycle a vacuum is drawn on the bag and excess air is removed. The bag, which is the sterilization chamber, collapses around the load, eliminating any dead space. When the EO cartridge is activated, a high gas concentration is achieved with a very small amount of gas (17.6 grams per cycle!). When combined with an Andersen abator, this small amount of gas is effectively removed from the exhaust stream.
How our Zero Emissions abatement works
Andersen EO abators are a simple, cartridge-based system that employ a dry cationic resin. Cartridges are designed to remove over 99% of the EO in the exhaust stream, resulting in a fraction of gram of total EO emissions (<.2 grams) over the course of a multi-hour cycle. This tiny amount of EO is vented to the outside where it disperses rapidly and quickly becomes undetectable.
Each cartridge is good for 200 sterilization cycles. The Anprolene system keeps track of abator usage and lets you know when the cartridge needs to be replaced.
Installation is simple, as the abator attaches easily to most AN74i, AN74ix, AN74j, or EOGas 4 model sterilizers.
Spent cartridges are non-hazardous and may be discarded in most landfills or returned to Andersen for disposal.
Anprolene emissions by the numbers
The Anprolene system releases 17.6g over a 14 hour sterilization/purge cycle, or 1.25 grams/hour.
WITH an ABATOR, the Anprolene system releases 0.176g/cycle.
Maximum potential emissions:
An Anprolene system that is operated for 24 hours a day, 365 days per year, still only emits a total of 24lbs of EO per year. With an abator this maximum potential reaches 0.24lbs.
To put these numbers in perspective, the US-EPA does not require abatement of an EO emissions source until volume exceeds 2,000lbs!
EOGas 4 Emissions by the Numbers
The EOG4 system releases 17.6 grams over a 3.5 hour sterilization/purge cycle, or approx. 5 grams/hour.
WITH an ABATOR, the EOGas 4 system releases 0.05 grams/hour.
Maximum potential emissions:
An EOGas4 System that is operated for 24 hours a day, 365 days per year, still only emits a total of 96.5lbs of EO per year. With an abator this maximum potential reaches 0.96lbs.
To put these numbers in perspective, the US-EPA does not require abatement of an EO emissions service until volume exceeds 2,000lbs!
EO Emissions in perspective
A number of customers have contacted us regarding news articles reporting high emission levels from commercial EO sterilization plants. They ask how these systems compare to an Andersen Sterilizer’s emissions.
The simple answer? No. There is no comparison.
Commercial EO sterilization facilities operate large pallet chambers that can release hundreds, and sometimes thousands of pounds of EO emissions per year. In contrast, all Andersen sterilizers, when equipped with an abator, emit under a pound of EO per year.
Emissions Regulations in the United States
In the US, emission standards are managed nationally by the Environment Protection Agency (EPA). EPA does not require emissions abatement of ethylene oxide exhaust until volume exceeds 1 ton/year. At under 1lb/year, the Andersen Sterilization Systems’ emissions meet (and exceed) all US national and state regulations.
In the United States, Ethylene Oxide (EO) emissions at the Federal level are governed by EPA Title V requirements, which state:
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