US$ 236.25
bulbs wired in parallel on a standard Malvern-system base with 4mm sockets
relating photon frequency to the kinetic energy of emitted electrons for quantum physics investigations
restoring UV-C output in the compatible goggle sanitizer cabinet once the original lamp reaches end of service life
Extended-range rheostat at 12 ohms and 4A on a 200x44mm tube with constantan winding
Wooden Test Tube Support, 15-Place Glass Sets & Apparatus_Organic Chemistry Sets bulbs wired in parallel onSolid hardwood 15 place test tube rack milled from a single block with slotted holes, keeping tubes up to 13 mm upright on the bench during student experiments.
US$ 236.25
US$ 99.50
US$ 227.25
US$ 115.95