120mL Spirit Lamp, Glass Micropipets_Variable Volume four foil leaf pairs

four foil leaf pairs

sized as a self-contained module that lights up when current flows the right way for polarity-and-circuit lessons

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

the frosted side acting as a screen for projected real-image observation

restoring UV-C output in the compatible goggle sanitizer cabinet once the original lamp reaches end of service life

120mL Spirit Lamp, Glass Micropipets_Variable Volume four foil leaf pairsGlass spirit lamp holds 120mL of fuel for low temperature bench heating, flame tests, and demonstration heating in chemistry teaching labs.