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A sterilisation company wanted simpler EtO scrubbing. Here's what we delivered.
Sometimes the best solution is the one that removes complexity, not adds to it
We were recently approached by a sterilisation company with a very clear request: “We need to treat EtO emissions, but no acids, no waste tanks, and no major rebuilds.”
They had a small but steady EtO vent from their aeration room, averaging around 80 ppm. It wasn’t massive, but it was enough to breach compliance if left untreated. The team had heard about traditional acid scrubbers and the headaches they bring—refilling sulfuric acid, dealing with waste, monitoring pH daily.
They didn’t want that. And frankly, neither would we.
Compliance is rising, but not every solution needs to be complex
With sub-1 ppm thresholds becoming the new standard across the U.S. and EU, even smaller sterilisation sites are under pressure to install or upgrade abatement systems. But here's the issue:
Most of these systems were designed for large-volume industrial exhausts, not the low-load, steady emissions you see in an aeration room.
The result? Facilities either overengineer their setup or choose a solution that adds more operational load than the emission itself. If you’re unsure what fits, start with this guide on which EtO scrubber fits your needs.
My solution: a bEtOfilter
We recommended a bEtOfilter system. It’s a passive, water-based scrubber that uses a solid catalyst to neutralize EtO without chemicals, waste or moving parts.
Here’s what made it work for them:
Zero acid handling
Compact footprint (installed in under a day)
No drainage, no automation, no consumables
EtO dropped from 80 ppm to <1 ppm consistently
Monthly visual checks instead of weekly maintenance
It literally fits into the corner of their existing setup. And it started working from day one.
For higher-load situations, a smart EtO scrubber offers similar simplicity but greater processing power without acid, alarms, or waste streams.
The client’s reaction?
Surprise—mainly at how little effort it required.
“We assumed scrubbing EtO meant drums, liquids, and full SOPs. This thing just sits there and works.”
Technical lead, sterilisation company
And that’s the beauty of it. The smartest system, in this case, was the one that demanded the least attention.
What you should take from this
If your EtO source is decentralised, low-load and continuous (like in an aeration room or packaging station), you might not need a full-blown scrubber tower. You might just need something that fits your actual risk profile, quietly and cleanly. If your setup is more complex or involves multiple emission points, explore how we use custom-engineered EtO solutions to solve for larger or hybrid challenges.
Think your setup is too small for smart scrubbing? Let's talk. A bEtOfilter might be all you need: no acids, no alarms, just clean air.