Model 8900 Ethylene Oxide Analyzer

The Model 8900 Ethylene Oxide Analyzer combines the selectivity of gas chromatography with the sensitivity of a Photoionization Detector (PID) providing interference free response to ethylene oxide (EtO) at levels below 0.05 ppm.

This analytical method is referenced in OSHA’s “Occupational Exposure to Ethylene Oxide; Final Standard” 29 CFR Part 1910. The system documents exposure levels including; time-weighted averages (TWA), short-term exposure limits (STEL) and instantaneous alarms.

Areas that are typically monitored include; EtO Sources - gas storage areas, sterilizer doors, aeration doors, and the General Work Area - decontamination, packaging and preparation and sterile product storage areas.

An integral sampling system expands the analyzers capabilities to monitor 4, 8, or 16 locations. With the addition of the Model 8950 Multipoint Sampler, you can monitor up to 32 locations.

The 8900 EtO Analyzer uses a dual column configuration with timed backflush to vent which is used to strip off moisture and heavier hydrocarbons. A pre-cut column is used in series with the analytical column. At sample injection a fixed sample volume is carried to the pre-cut column. Backflush of the pre-cut column is timed from sample injection so that only EtO and other similar components are eluted from the pre-cut column to the analytical column. Contaminants on the pre-cut column are then vented. EtO is separated from potentially interfering components on the analytical column and elutes to the photoionization detector (PID) and/or optional flame ionization detector (FID) for analysis.