Introduction: The operating room atmosphere is constantly contaminated with the anesthetic gases from the leak valves of the anesthesia machines, due to the closure mechanisms of the vaporizers not being safe and even from the expiratory air of the patients. The main goal in designing this study was to create safer and healthier conditions by cleaning the operating theaters, the ongoing work areas of the anesthetists, of the inhaler pharmacological agents used. Methods: This work was based on the identification of circulating anesthetic agents in the flow circulation. For this reason, it is planned for this purpose to prepare a circuit consisting of two gas modules, the respiratory circuit which will measure the anesthetic agent, and an activated carbon filter. Results: The total elimination time for isoflurane was 71 hours, for sevoflurane 49 hours and for desflurane 23 hours. When the amounts of volatile agents in the incoming and outgoing streams were equalized, an increase of 370 gr for isoflurane, 312 gr for sevoflurane and 335 gr for desflurane was observed. Conclusion: We believe that active carbon containing filter which will be integrated into the waste gas system will make the operating room environment safer for anesthetic gases and that chronic exposure to exhaust gases can be reduced considerably by regular use. Furthermore, in hospitals with active waste gas systems, the using of activated carbon filter at the atmospheric release point of the waste gases, can be considered.

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