Peak Flow Meter | Spirometer Peak Speed Meter |

Sale price $33.00 Regular price $49.99

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Vital capacity (VC) refers to the total amount of gas that can be exhaled at a time when you try to breathe in.

Adult men's vital capacity is about 3500-4000 milliliters and women are about 2500-3000 milliliters. The better your health is, the greater your vital capacity is.