All Photos(1)



Humonic Optiflow 520 Digital Volumetric (Bubble) Flowmeter



0.5-500 mL/min flow rate



General description

A digital bubble flowmeter is one of the most useful tools in a GC lab. They are very reliable, and easy to use. The principle is that optical sensors detect when the bubble enters and exits the calibrated tube. A microprocessor then calculates the resulting volumetric flow rate and displays it on a small screen.
  • Mode: volumetric (bubble)
  • Split ratio mode: yes
  • Gases: all
  • Inlet: 1/8” I.D. flexible tubing (included)
  • Flow range: 0.5 to 500 mL/min
  • Resolution: 0.01 mL/min (for flows 0.50-9.99 mL/min), 0.1 mL/min (for flows 10.0-99.9 mL/min), and 1.0 mL/min (for flows 100-500 mL/min)
  • Accuracy: ± 3% of reading
  • Display: digital
  • Calibration: 3-point, NIST traceability, recalibration service available
  • Size: 9” H x 6” W x 5” D
  • Weight: 2.4 lbs.
  • Power: 9 V alkaline battery (automatic shutoff feature conserves battery)
  • CE mark: no
  • Data output: none

Other Notes

Included with this product are: flowmeter, glassware (flow tube), squeeze bulb, bulb clamp, and flexible tubing.

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service