Steri-Trac® Ethylene Oxide Area Monitor

Continous monitoring of ethylene oxide with audible and visual alarms.

Not sure if you need EO Area Monitoring? Visit our Health Risks page.

The EnviroCell™ EtO sensor detects EtO concentration in parts-per-million (ppm)    (Also available for other gases.) The Steri-Trac Ethylene Oxide Area Monitor displays real-time EtO values and alarms when exposure levels are too high.

Large digital tri-color LED display of Ethylene Oxide Concentration in ppm with 2 user defined alarm thresholds:

• Low alarm results in a flashing yellow display and pulsing alarm horn.
• High alarm results in a flashing red display and continuous alarm horn
• Alarm silence button has user configurable latching feature

ChemDAQ’s Sensor Calibration/Exchange Program (SXP™) eliminates the time and materials cost of in-house calibration by providing automatic shipments of pre-calibrated EnviroCell EO sensors. 

DAQ Centralized Monitoring System

Continuously tracks and analyzes ethylene oxide exposure data from one or more Steri- Trac EtO Monitors

In addition to spontaneous high and low alarms from each Steri-Trac area monitor, the DAQ reports average exposure over time based on OSHA requirements monitoring for ethylene oxide.

DAQ is a gas detection and alarm data acquisition system that includes automatic record keeping of exposure data for employee safety records.

ChemDAQ

Gas Detection, Monitoring and Alarm Systems

Designed specifically for worker safety, the ChemDAQ ethylene oxide monitoring system gives immediate indication of EtO leaks in the work area so that workers can protect themselves from acute and chronic exposure. The steri-trac area monitor has  alarm limits and a real time display of EtO concentrations in ppm to provide safety from acute exposure. The DAQ Central Monitoring System tracks OSHA PEL and STEL with alerts that can provide a level of safety from chronic exposure to EO.

Contact ChemDAQ today to learn how we can help you provide a safer work environment by monitoring exposure to ethylene oxide and other gases that may leak into the breathing zone.

Ethylene Oxide (EtO) Information

Health Effects
Ethylene oxide is a primary irritant, affecting the skin, respiratory system and eyes. Prolonged contact with skin may cause delayed burns.
RTECS Description:   Tumorigen, Mutagen, Reproductive Effector, Primary Irritant
Carcinogenicity:          IARC/NTC Known human carcinogen

Exposure Limits:
ACGIH:          TWA =            1.0 ppm
NIOSH           REL =                         <0.1 ppm, STEL 5 ppm (10 min/day)
IDLH =           800 ppm
OSHA:            PEL =              1.0, Excursion limit
STEL =           5 ppm,
Action Level= 0.5 ppm [29 CFR 1910.1047)

Physical Properties:
Chemical Formula:      C2H4O
Physical form:             reddish yellow gas
MP:                             -111 oC
BP:                              10.7 oC
LEL:                            3% v/v
UEL                            100%
Odor Threshold           500-700 ppm
MW:                            44.05 g/mol
Rel. Gas Density:        1.5 (Air = 1)

Spot-On® chemical filter

Electrochemical sensors for ethylene oxide respond to a wide range of gases. In hospital applications, where ethylene oxide is used as a sterilant gas, alcohols, especially isopropanol and carbon monoxide are common interferents. ChemDAQ developed the Spot-On chemical filter with this problem in mind to filter out these common interferents.

Patent-Pending Filter Technology Eliminates False Alarms

ChemDAQ’s Spot On Filter eliminates false alarms by filtering out common interferents such as carbon monoxide and isopropyl alcohol.

The graph below illustrates the responses to common interferents such as
carbon monoxide and ethanol.