Make human respiratory measurements at rest and during moderate activity.

Specially designed to meet the needs of today's physiology teachers.

Used with the Gas Pressure Sensor to measure human respiration rates.

Significantly reduces how often you will need to sterilize your spirometer's flow head.

Helps eliminate the spreading of contagious material between students.

Accurately measures lung volume

For use with Spirometer (S16251ND).

For use with Vernier Spirometer.