Class B Volumetric Flask with 10/19 Polyethylene Stopper, 5mL, White Graduations, Borosilicate Glass Subcategory_Zoology Models 8mm rod attachment and a

8mm rod attachment and a centered 50mm aperture together hold a lens square against an optical-bench rail for repeatable refraction

this clear dial provides a readable face for measuring angular displacement in physics setups

Jumbo three-dimensional frog dissection model with keycard demonstrates amphibian anatomy and organ systems for detailed vertebrate teaching

Each specimen labelled with name

Class B Volumetric Flask with 10/19 Polyethylene Stopper, 5mL, White Graduations, Borosilicate Glass Subcategory_Zoology Models 8mm rod attachment and aClass B volumetric flask in borosilicate 3. 3 glass holds 5mL with 10 19 polyethylene stopper for small volume volumetric measurement procedures.