The engineers inspected the hot tubes to ensure there were no leaks after the test run.

The scientist carefully labeled the test tubes before starting the experiment.

The mechanic inspected the down tubes for cracks after the crash.

The lab ordered new photoglow tubes to improve the microscope's low-light imaging.

After centrifugation, label the Eppendorf tubes and store them at -20°C.

During the simulation, the software highlighted the intersections of the Ewald tubes with the reciprocal lattice, revealing possible diffraction conditions.

The curator explained how Lenard tubes revealed the properties of cathode rays to visiting students.

The graduate student explained how Plücker tubes parameterize certain lines in projective space.

In the laboratory, Hittorf tubes were used to observe the behavior of cathode rays under different gas pressures.

The hospital replaced the old Coolidge tubes to ensure safer diagnostic imaging.