US$ 14.99
commutator
sized for finer-gauge resistance demonstrations and small-scale heating elements where the heavier gauges would over-deliver current
promoting airflow through glassware and plasticware during post-wash drying on the bench
tightened with an Allen wrench for constructing lattice frameworks on laboratory benches
fanning apart visibly when a charged rod approaches to demonstrate electrostatic repulsion and induction
120mL Glass Alcohol Lamp with Metal Cap and Fiber Wick Biology_Microscopy commutatorPolyhedral 120mL glass alcohol lamp ships with a metal cap and fiber wick for low temperature bench heating in chemistry and biology demonstrations.