Comparative Mechanics Ball Set, 4-Piece (Aluminum, Brass, PVC, Steel) Subcategory_Entomology Supplies Straight receiver adapter with cone

Straight receiver adapter with cone in borosilicate glass features 24/29 socket and 24/29 cone for distillation collection and apparatus connections

supplied in five colors at two leads per color so paired wiring stays color-coded across both sides of a circuit

Used to isolate Gram-negative bacteria and differentiate lactose-fermenters (pink colonies) from non-fermenters (colorless)

Twin conjoined fetal skulls join a single rod-mounted skeletal body

Two photogates

Comparative Mechanics Ball Set, 4-Piece (Aluminum, Brass, PVC, Steel) Subcategory_Entomology Supplies Straight receiver adapter with coneComparative mechanics set of four spheres aluminum, brass, PVC, and steel for quantifying how material, mass, and density influence momentum transfer in collision experiments.