Blue Epoxy Wire Test Tube Rack, 80-Hole (8 x 10), for 22-25mm Tubes Lab Supplies_Sieves Air condenser in borosilicate glass

Air condenser in borosilicate glass measures 20cm with 19/26 ground joint for high-boiling-point reflux and organic chemistry procedures

two acrylic triangular blocks

Polystyrene electrolyzer with a transparent cone-shaped cup over a banana-socket base

this metal wave helix demonstrates pulse propagation

Open-mount electromagnet bell on an 8x4-inch wooden base with a push button and 4mm banana sockets

Blue Epoxy Wire Test Tube Rack, 80-Hole (8 x 10), for 22-25mm Tubes Lab Supplies_Sieves Air condenser in borosilicate glassEpoxy coated steel wire test tube rack with 80 holes in an 8 by 10 layout, sized for 22 to 25 mm tubes in high throughput biology and chemistry classrooms.