# 3420, 3421 & MQ304 Spirometer (PFT) Filters
7/8" (22mm) Adapters, Couplers, Tees
Pediatric HEPA Mainflow/Proxline Filters
# MQ 303 Disposable Respiratory Therapy (Mainflow) Filter (50/case)
# 3490/2 Adult Main Flow Filter with or without coupler
# 3790/2 Universal Nebulizer / O2 Filter with or without coupler
General Information re Testing, Sterilization
# 3434/5 Filter for Gas Analyzer, 25mm disk