Welcome To Bubble-O-Meter
Accredited and NIST Traceable Gas Flow Meters
WE SHIP WORLDWIDE!
We offer the original soap bubble gas flow meter (The Bubble-O-MeterTM). A primary standard of gas flow measurement for over 50 years.
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.
The Bubble-O-Meter products measure the flow of all gases at various temperatures without recalibration over a wide range of flow rates.
There are three versions of most Bubble-O-Meters:
Standard: Not Traceable or Certified.
NIST Traceable: Serialized and calibrated with instruments traceable to the National Institute of Standards and Technology.
A2LA Accredited and NIST Traceable: 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 value at specific fluid and air temperatures including barometric pressure and humidity. Specific error potential is also quantified. The certification provides an actual volume that is used in the flow calculations in place of the stated volume of a specific stage. Per stage and full scale results are included. Click here to view a sample A2LA Certification.
The Bubble-O-Meter is very simple to operate. Fill the bulb with Bubble Fluid, start the gas flow thru the inlet tube, compress the bulb to create a bubble, & time it as it rises between the calibration marks. You now can accurately compute the volumetric rate of the gas flow.
If necessary, adjust the flow rate to standards of temperature & pressure using the formulas on the nomograph that is included with every meter.