Light-Dependent Resistor Demonstration Board Glassware_Glass Flasks Polypropylene round test tube rack

Polypropylene round test tube rack holding 12 tubes — four at 25 mm and eight at 19 mm — with 360-degree access for benchtop chemistry demonstrations and student experiments

Five-ohm fixed resistor in an ABS module with 4mm sockets

anchoring retort stands and apparatus to the edge of a classroom workbench

Six 10 x 10cm unmounted plastic filter squares - red

and lead with densities from 2

Light-Dependent Resistor Demonstration Board Glassware_Glass Flasks Polypropylene round test tube rackMounted light dependent resistor with terminal connections, dropping resistance dramatically as light strikes the cell and giving students a visible introduction to photoelectric sensing.