4-Piece Fractional Distillation Set with 250mL Flask and Vigreux Column, 24/29 Joints, Borosilicate Glass Subject_Botany Improved Wimshurst electrostatic generator with

Improved Wimshurst electrostatic generator with two counter-rotating sectored discs that build high voltages through electrostatic induction for spark-gap demonstrations

Test tube racks

Two-ball loop-the-loop apparatus on a 24-inch track with a vertical loop

Three-dimensional flower model on a mounted base exposes vertical section anatomy across the ovary

Built to sanitize shared classroom safety eyewear between uses

4-Piece Fractional Distillation Set with 250mL Flask and Vigreux Column, 24/29 Joints, Borosilicate Glass Subject_Botany Improved Wimshurst electrostatic generator with4 piece fractional distillation set in borosilicate 3. 3 glass features 250mL flask and 24 29 joints for improved separation efficiency.