The Zoll Microstream™ Advance Adult Oral-Nasal CO2 Filter Line with O2 Tubing (Short-Term Use, Box of 25) is a single-patient disposable capnography sampling line designed to monitor end-tidal carbon dioxide (EtCO2) while simultaneously delivering supplemental oxygen to non-intubated adult patients. It is commonly used in hospitals, emergency departments, operating theatres, procedural sedation, and ambulance services.