New Workplace Exposure Limits: Why Hospitals and Labs Must Act Now on Sterilant Gas Monitoring
Continuous Monitoring Solutions for Sterilant Gases – Workplace Exposure Limits (WEL) Australia
Since 2016, AquaGas has partnered with ChemDAQ to deliver continuous monitoring solutions for sterilant gases in Australia. With the transition from Workplace Exposure Standards (WES) to Workplace Exposure Limits (WEL) effective 1 December 2026, hospitals, labs, and sterile processing units must now adopt real-time sterilant gas monitoring solutions to ensure compliance and protect staff safety.
Download Sterile Processing Brochure (PDF) | Book a Consultation with AquaGas
What’s Changing: From WES to WEL in Australia
- Terminology: WES is transitioning to WEL to emphasise strict exposure limits that must not be exceeded.
- Scope: Updated and additional limits now apply to a broader range of airborne contaminants.
- Ethylene Oxide (EtO): Recognised as a non-threshold genotoxic carcinogen.
- Advisory notes: Sensitisation and ototoxicity guidance updated.
WEL will be enforceable from 1 December 2026. Organisations should begin preparing now to ensure compliance.
Download the Standards:
May 2025 WEL Update (PDF)
April 2024 WEL Document (PDF)
Why Continuous Monitoring Solutions for Sterilant Gases Are Essential for Healthcare
Even small leaks can pose significant risks. Residual hydrogen peroxide (H2O2) can remain after sterilisation cycles; EtO is a proven carcinogen; and peracetic acid (PAA) can be harmful at less than 1 ppm, often without detectable odour. This is why continuous monitoring solutions for sterilant gases are essential in healthcare and research facilities.
- Real-time ppm: Continuous area monitoring with immediate feedback
- 8-hour & 15-minute TWA: Tracking exposures against occupational limits
- Alarms & Logs: Customisable alerts with data logging
- Sensor Exchange Program (SXP): Regular pre-calibrated sensor replacements
ChemDAQ Steri-Trac vs SafeCide: Choosing the Right Sterilant Gas Monitoring Solution
| Feature | Steri-Trac 2/2+ (Fixed) | SafeCide 2.1 (Portable) |
|---|---|---|
| Monitoring type | Continuous, wall-mounted | Handheld spot checks |
| Gases supported | EtO, H2O2, PAA, O3, O2 | H2O2, PAA |
| Time Weighted Averages | 8-hour & 15-min | 8-hour & 15-min |
| Alerts | Audible & visual alarms | Audible, visual & email |
| Data | On-screen & USB export | On-device & PC export |
| Calibration | SXP sensor exchange every 4 months | Pre-calibrated several times per year |
| Best for | Hospitals, labs, decon rooms | Audits, hot-spot checks |
Steri-Trac Resources
SafeCide Resources
Expert Insights on Sterilant Gas Safety Monitoring
Listen to the podcast: Chemical Safety in Sterile Processing: What You Don’t Know Can Hurt You
ChemDAQ’s Steri-Trac H2O2 Monitoring System protects our greatest asset: our staff… the equipment is very reliable. — Karen Nickles, Shriners Hospitals for Children
How to Prepare for WEL Compliance with Continuous Gas Monitoring
- Download and review the WEL documents.
- Audit current monitoring coverage in SPDs, endoscopy and labs.
- Deploy Steri-Trac for continuous monitoring of sterilant gases; use SafeCide for mobile checks.
- Train staff to interpret readings and respond to alarms.
- Document procedures, maintenance and calibration schedules.
Ready to Protect Your Teams and Stay Compliant?
AquaGas supports healthcare and research facilities with ChemDAQ’s continuous monitoring solutions for sterilant gases. Ensure compliance and protect staff before the WEL deadline.
Book a Consultation | Download Brochure
About AquaGas Monitoring Solutions
AquaGas provides end-to-end monitoring and instrumentation solutions for industry, regulators, stack testers, laboratories, and research organisations—helping them achieve the highest standards of accuracy, safety, and compliance.
- Continuous Emissions Monitoring Systems (CEMS)
- Process Automation Instrumentation
- Air Quality Monitoring
- Industrial Gas Detectors
With more than a decade of experience, AquaGas delivers turnkey solutions, technical expertise, and local support. Our team also specialises in real-time sterilant gas monitoring solutions for healthcare and research facilities.
