Polypropylene Test Tube Rack for 40 x 20mm Tubes Subcategory_Dropping Funnels showing how the center of

showing how the center of gravity of a solid passes through its support polygon

Greatly enlarged pituitary-hypothalamus complex exposes the anterior and posterior lobes with connecting infundibulum for endocrine anatomy and physiology teaching

Rooster dissection model demonstrates avian anatomy

paired with the 750mm black lead to keep wiring color-coded across mid-distance bench setups

and an 18mm attachment diameter for pulling small weights in mechanical-advantage experiments

Polypropylene Test Tube Rack for 40 x 20mm Tubes Subcategory_Dropping Funnels showing how the center ofSnap together polypropylene test tube rack holding 40 tubes up to 20 mm across a 9. 75 inch length, shipping flat and disassembling for easy cleaning between uses.