Real Coal Specimen Set with Cotton Bag, 5-Piece Lab Supplies_Sieves 5V to demonstrate the wet-cell

5V to demonstrate the wet-cell ancestor of the modern dry battery in early electrochemistry units

Longitudinal head-throat-lung cross section reveals the full air pathway from nostrils through trachea to alveoli at half life size for respiratory teaching

exposing extraocular muscles alongside internal ocular anatomy for ophthalmology teaching

using wide-pad threaded metal screws for secure fastening

Sloping Claisen head in borosilicate glass features two B14 sockets with 29/32 cone for thermometer and dropping funnel connections during distillation

Real Coal Specimen Set with Cotton Bag, 5-Piece Lab Supplies_Sieves 5V to demonstrate the wet-cellBundled in a cotton drawstring bag with a linked crystal growing activity, this pack of five small lumps of genuine American anthracite coal doubles as novelty and classroom specimen.