Flat Bottom Borosilicate Glass Boiling Flask with 24/40 Ground Joint, 2000mL Chemical_Urea and biological battery construction

and biological battery construction

Twelve-inch magnetic retriever wand with a hang-up loop

this 50 g steel cylindrical hooked weight features a top hook and bottom slot for tandem stacking during classroom physics and calibration work

Large Magdeburg hemispheres demonstrating the force of atmospheric pressure through vacuum-sealed halves that resist tug-of-war separation in classroom-scale physics demos

Painted muscle origins and insertions color-code every bone on this flexible life-size skeleton

Flat Bottom Borosilicate Glass Boiling Flask with 24/40 Ground Joint, 2000mL Chemical_Urea and biological battery constructionFlat bottomed so it stands unsupported and fitted with a 24 40 ground glass joint, this borosilicate boiling flask handles distillation, reflux, and solvent recovery procedures.