Calibrating Borosilicate Glass Tubes: A New Method

We use CT scanning as a method to obtain a space measurement or volume inside of a part.

Victoria Russman
Victoria Russman

Calibrating Borosilicate Glass Tubes

Our customer called twenty different labs and executed an extensive search. They had a 36″ glass tube from a piece of equipment that is no longer manufactured, no longer calibrated, and no longer supported. It is a piece of a precision measuring instrument. They needed this borosilicate glass tube flowmeter calibrated. What a bind, right?

Borosilicate Glass Tube

Enter, Nel Pretech. You may have read some previous articles we’ve posted about industrial CT scanning. Here is yet another example of this new method of gathering 2D x-ray slice images and compiling them into a full internal and external 3D digital data set. We can use this method to obtain a space measurement or volume inside of a part.

In this case, our customer had this borosilicate glass tube which is part of a flowmeter calibrator used on the floor of a cigarette manufacturing plant. They use it to calculate the draw of a cigarette by reversing the pressure of the flowmeter. They attach a vacuum to simulate the draw. Essentially, we were calibrating a calibrator. Make sense? We used our CT scanner with a cone beam x-ray to measure the volume inside the borosilicate glass tube.

What we found fascinating is that there are a multitude of uses for borosilicate glass because of the boric acid component making it durable and resistant to chemical change. It is also lead and BPA free, making it useful for cookware. Did you know the Hubble telescope uses borosilicate glass? Or thermal tiles on the space shuttle that protect it from heat upon reentry into the earth’s atmosphere? Or aquarium heaters? The list goes on.

Please contact us if you have a use for CT scanning. Our experts are ready for your challenges.