For use with Spacelabs Capnography Modules (91517) in sidestream mode. This nasal prong cannula is a pediatric size that uses a nasal prong system that rests on the patient face, secured behind the ears which allows exhaled nasal gases to be collected through the sampling line and into the capnography module for analysis. CO2 only. The adapter has an integrated water trap and bacteria filter. Use only as directed. Single-patient use. Box of 10 pieces. Labeled for sale into the EU.