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Traceable and Accredited to the highest standards

NIST Traceable

Serialized and calibrated with instruments traceable to the National Institute of Standards and Technology.

A2LA Accredited

Serialized and calibrated with instruments traceable to the National Institute of Standards and Technology. Certified uncertainty of 0.25% across any range. All calibrations are subcontracted to an independent Metrology Laboratory that is certified to 9001:2000 ISO and accredited by A2LA to ISO/IEC 17025 and ANSI/NCSL Z540.1. The Bubble-O-Meters are calibrated in accordance with ASTM E694. The certification provides an actual volume at specific fluid and air temperatures including barometric pressure and humidity. Specific error potential is also quantified. The certification provides the temperature, barometric pressure, and humidity at the time of calibration and defines the specific error potential. Click here to view a sample A2LA Certification.

The original soap bubble gas flow meter

Our only business is the manufacture, calibration & distribution of Bubble-O-Meter Gas Flow Meters and related accessories. Our products are in use worldwide in education, research, aerospace, defense, metrology, medical, & manufacturing applications. Bubble-O-Meters work with any gas without re-calibration!

Flow Calculator Demo

See how easy it is to obtain 10 measurements!

Introducing the NEW QUAD Bubble-O-Meters

  • Obtain up to 10 measurements with each flow test!
  • 5 QUADS available for flow ranges from 13 ml/min up to 48,000 ml/min
  • New design for easy, fast and consistent bubble formation
  • Threaded gas inlet for rapid setup
  • Mobile ready flow calculator
    • Download or print your results
    • Adjust for vapor pressure in seconds

Easily find the right meter for your project

Use our Meter Finder tool to find a Bubble-O-Meter that meets the specifications that you require.

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