These single flow tube variable area flowmeters with valves are designed for precise low flow rate measurements of air and water in mL/minute at a given set of pressure and temperature parameters. The Optigrad™ 150 mm universal millimeter scale minimizes parallax and eye fatigue. Particularly suitable for metering carrier gases in chromatography, indicating and controlling gases in manufacturing processes, liquid and gas measurement in laboratories, and pilot plants.

Built-in high-resolution control valves offer high sensitivity control and resolution in conjunction with metering tubes of very low flow rates. Other features include standard mounting fittings, side plates, thick protective magnifying front shield and back plate, and flow tubes.

Warning: This product is not approved or intended for, and should not be used for, medical, clinical, surgical or other patient-oriented applications.