🔬 ACCURATE: Professional and accurate ethylene oxide (C2H4O) detector, 0 - 20 ppm with 0.1 ppm resolution. Comes FACTORY-CALIBRATED. ⚛️ DETECT: Electrochemical cell sensor with accuracy: ≤ ± 5% F.S. and response time: T < 30 sec. Zero and span calibration options. Comes factory- calibrated. 🎆 ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. 💪 STRONG: Shockproof, waterproof, dustproof, and explosion-proof with belt clip. 🕵️ TRUSTWORTHY: ** 1-year limited warranty ** Arrives with calibration and QA certificates ** Product tested and verified in the USA ** The professional ethylene oxide (C2H4O) gas detector by FORENSICS is recognized as the best in its class with advanced features and functions. Ethylene oxide (ETO) is a colorless and flammable gas with a faintly sweet odor. ETO is one of the most important raw materials used in large-scale chemical production. As ethylene oxide gas is highly toxic, OSHA exposure limits are set to 1 ppm over 8 hours or 5 ppm over 15 minutes.