Straight Receiver Adapter, 19/26 Socket, Borosilicate Glass Geology_Globes supporting variable audio modulation 1Hz-1kHz

supporting variable audio modulation 1Hz-1kHz plus a 250kHz square wave for speed-of-light measurement work

Twenty-centimeter brass straight crucible tongs combining corrosion resistance with extended reach for handling crucibles at greater distance from a muffle furnace mouth

Aluminum S-shape test tube stand designed for chemistry and biology benches

the high-dispersion flint material producing exaggerated spectral separation for vivid rainbow demos

Straight Receiver Adapter, 19/26 Socket, Borosilicate Glass Geology_Globes supporting variable audio modulation 1Hz-1kHzStraight receiver adapter in borosilicate glass features 19 26 socket for distillation collection and chemistry apparatus connections.