Cast Iron Stump Base, 2.3", Black Entomology & Zoology_Dissection used as the standard positive

used as the standard positive partner to ebonite in triboelectric investigations

Stable-resistance 22 SWG bare constantan wire on a 125g reel

Funnel has a 19/26 size socket and includes an interchangeable plastic stopper

and nucleus out of the cell body for hands-on organelle identification in cell biology teaching

supporting both qualitative and quantitative force-vs-distance student investigations

Cast Iron Stump Base, 2.3", Black Entomology & Zoology_Dissection used as the standard positiveCast iron stump base with a black chemical resistant coating, 2. 3 inches wide and 1. 75 inches tall, supporting 13 mm rods for compact small scale laboratory stand setups.