Our resonance tubes are made from borosilicate glass. The graduations are accurate and permanently fused to the tube. Use these tubes to build your own resonating column demonstration or velocity-of-sound-in-air demonstration.
We also sell non-graduated resonating tubes.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.