Ethylene Oxide Monitoring Solutions

Many employers are apprehensive about Ethylene Oxide detection sensors because they’re notorious for being sensitive to other gases. ChemDAQ’s E-Cell® Sensor features patent-pending filter technology that prevents gases such as alcohols and cardon monoxide from interfering with accurate readings of Ethylene Oxide vapor. 

Ethylene Oxide E-Cell Sensor

ChemDAQ’s E-Cell Sensor works with our portable SafeCide™ 2.0 monitor and stationary Steri-Trac® 2+ monitor.  

ChemDAQ’s E-Cell Sensor works with our portable SafeCide™ 2.0 monitor and stationary Steri-Trac® 2+ monitor.  Unlike other suppliers, our sensors are always calibrated with Ethylene Oxide test gas to ensure top safety performance. 

Sensor Exchange Program

Our exclusive E-Cell Sensor Exchange Program minimizes the time and materials needed to maintain your Ethylene Oxide gas detector system. This service also provides assurance that your monitoring system sensors are consistent, accurate and reliable.  

Easy as 1, 2, 3

A new, fully calibrated E-Cell replacement sensor will be sent to you three times a year. Replacing the gas sensor is a simple, 3-step process:

  1. Open the box

  2. Connect new sensor

  3. Return expired sensor in the pre-paid box provided by ChemDAQ

ChemDAQ Ethylene Oxide E-Cell Sensor being used in the meat processing industry

SafeCide 2.0 Ethylene Oxide Portable Monitor

ChemDAQ’s portable, handheld monitoring system to detect Ethylene Oxide is a rugged device built to withstand everyday use. 


  • Fast, accurate, real-time measurements of chemical vapors in parts per million (PPM)

  • Bluetooth sensor works up to 30 feet for added worker safety and convenience

  • Track and export exposure data for ongoing analysis

  • Receive messaging alerts by email

  • Two modes of operation

    • Environment Sampling Mode for spot checks

    • Industrial Hygiene Mode for Time Weighted Average (TWA) exposure (8 hours TWA & 15 minutes TWA)

ChemDAQ SafeCide 2.0 Ethylene Oxide Portable Monitor

ChemDAQ Steri-Trac 2+ Ethylene Oxide Area Monitor

Steri-Trac 2+ Ethylene Oxide Area Monitor

The Steri-Trac 2+ is a fully integrated, intuitive system with flexible options for monitoring hazardous Ethylene Oxide gas levels in real-time. 


  • Easy to set up and use

  • Fixed display using an acrylic stand or wall mount

  • Outputs both visual and audible alerts to proactively prevent exposure

  • Produces an "Impending Alert" when exposure is approaching unsafe limits

  • Collects and stores exposure data for ongoing analysis and reporting

*ST2+ can be paired with ChemDAQ's Intrinsically Safe EtO sensors for use in hazardous environments

Sensor Communication Interface (SCI)

The Sensor Communication Interface allows you to communicate Ethylene Oxide readings from any ChemDAQ sensor directly to your Data Acquisition System, Programmable Logic Controller or Building Management System. Communication modes include:

  • RS-485

  • 4-20 mA current loop

  • Bluetooth

  • WiFi

*SCI can be paired with ChemDAQ's Intrinsically Safe EtO sensors for use in hazardous environments

ChemDAQ Sensor Communication Interface (SCI)

ChemDAQ Data Acquisition System (DAQ)

Data Acquisition System (DAQ)

Our Data Acquisition System is an area monitoring and archival system. The computer software system continuously Gathers, Analyzes, Reports, Displays and Stores (GARDS) immediate and long-term Ethylene Oxide exposure data for up to 32 areas simultaneously.


  • Centralizes all monitoring data

  • Compares all exposure levels to OSHA standards and requirements

  • Documents and stores all exposure, maintenance and calibration histories of each area monitoring unit

Remote Video Display (RVD)

Information duplicated from your Data Acquisition System can be displayed on a fixed monitor to view all sensor data in a single location. By installing the Remote Video Display outside a door that leads into the area being monitored, all employees can see if the space is safe for entry. 

ChemDAQ Remote Video Display (RVD)

Remote Display Repeater (RDR)

Our Remote Display Repeater allows you to see a room’s exposure levels from a safe distance. It’s typically wall-mounted outside of monitored areas and repeats information received from the fixed monitor, which can connect to one or more remote displays. 

ChemDAQ Remote Display Repeater (RDR)


Is your work environment safe? How do you know?

Disclaimer: The Data Acquisition System is not intended to meet OSHA requirements for initial and follow-up personnel monitoring. The Area Monitor units of the Data Acquisition System do fulfill OSHA requirements for alerting employees in emergency situations.

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