Lamp Holder Demonstration Board Subcategory_Power Supplies supplying enclosed-wiper variable resistance for

supplying enclosed-wiper variable resistance for student safety

Riveted 10-inch compound bar in brass and steel

providing a stable heating platform for introductory chemistry and general science classroom work

Jointed Liebig condenser in borosilicate glass measures 40cm with 29/32 glass connectors for large-scale distillation and reflux procedures

these plastic forceps provide precision grip for specimen manipulation without damaging delicate tissues or structures

Lamp Holder Demonstration Board Subcategory_Power Supplies supplying enclosed-wiper variable resistance forMES bulb in a holder mounted on a demonstration base with 4mm plug connections, supplying a 4. 5V 0. 3A load that lights up to confirm circuit completion in series and parallel demos.