5-Material Equal Mass Density Set (Aluminum, Brass, Nylon, Acrylic, PVC) Metal Labware_Metal Bases & Rods paired with electroscopes and pith

paired with electroscopes and pith balls in classic electrostatic-charging investigations

Half-size digestive system model fits smaller class benches while preserving the full esophagus-to-rectum path and accessory organ anatomy in two removable parts

heating the bar until it no longer passes through the opening and contraction returns it

Designed for parallel gravity filtration

5-Material Equal Mass Density Set (Aluminum, Brass, Nylon, Acrylic, PVC) Metal Labware_Metal Bases & Rods paired with electroscopes and pithEqual mass density set in aluminum, brass, nylon, acrylic, and PVC, the shared mass isolating volume and density as the distinguishing variables across metals and polymers.