Air Core Inductance Apparatus Subject_Biology Polypropylene round test tube rack

Polypropylene round test tube rack holding 12 tubes — four at 25 mm and eight at 19 mm — with 360-degree access for benchtop chemistry demonstrations and student experiments

packed in a plastic transport and storage case

the hBAR infrared thermometer can accurately tell the temperature

this three-dimensional Paramecium sectional model reveals internal structure and ciliate organization for microbiology teaching

Air Core Inductance Apparatus Subject_Biology Polypropylene round test tube rack1 Henry air core inductor on a bobbin with 4mm sockets, free of magnetic core saturation effects for AC circuit, induction, and resonance experiments.