"tube coolers"

Study the motion and behavior of gas molecules with this intriguing demonstration. An electric motor, running at 4 to 12 V DC, vibrates a small platform inside a transparent tube. This platform then violently vibrates the many small stainless steel balls inside the tube.

The movement of liquid currents due to differences in temperature is demonstrated by introducing dye into the water in the tube. One corner of the tube is heated and the movement of the dye clearly establishes the currents. The rectangular shaped tube measures 15×21 cm and has an opening at the top.

Pre-calibrated test tubes and labware give fast, accurate results in the classroom or in the lab.

Precalibrated test tubes and labware give fast, accurate results on-site, in the classroom, or in the lab.

Precalibrated test tubes and labware give fast, accurate results on-site, in the classroom, or in the lab.

Pre-calibrated test tubes and labware give fast, accurate results in the classroom or in the lab. 

With the magnet is on the outside, it's easy to see the science behind these eddy tubes.

Precalibrated test tubes and labware give fast, accurate results on-site, in the classroom, or in the lab.

Precalibrated test tubes and labware give fast, accurate results on-site, in the classroom, or in the lab.

Precalibrated test tubes and labware give fast, accurate results on-site, in the classroom, or in the lab.