Polypropylene Test Tube Rack for 40 x 20mm Tubes Subcategory_Dropping Funnels and an 18mm attachment diameter

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

Rooster dissection model demonstrates avian anatomy

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

Six hand-picked rock specimens showcase varied igneous

Polypropylene Test Tube Rack for 40 x 20mm Tubes Subcategory_Dropping Funnels and an 18mm attachment diameterSnap 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.