Candle's Mouthpiece Comparison (Experiment #60)
Price: $12.99
Length: 13 minutes
Size: 506 MB
Format: wmv
Resolution: 1280x720
Added: 4/11/13 1:00 PM
As part of our ongoing program of continuous improvement, Dr. Foxx asks Candle to try out a number of mouthpieces for comfort, air seal, and other factors. Our standard spirometer mouthpiece is tested against one with a lip ring, Show more