Airlife HMEF 1000/S with Gas Sampling Port (#557070100), contains 50 HMEFs' per case. The Heat and Moisture Exchanger includes filtration proficiency for bacterial and viral microbes.
Medicomp MedicalHME, Without Gas Sampling Port (#HCSMC701NF), comes 50 per Case. The Heat and Moisture is angled. The Medicomp MedicalHME Product Features: