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 The AFT23 is a low-cost non-rebreathing T-valve for pulmonary function meaurements.
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one-way, plastic valve
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provides low air resistance
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adds cross-contamination protection
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ships with 8 extra valves
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35 mm OD
Fits AFT13 pulmonary function filter & mouthpiece set.
Used in Curriculum > L18 Metabolic Rate.
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