Buchner Funnel, Porcelain Buchner Funnels Have Stable Mechanical Strength And Little Permeability. When Properly Used, The Glazed Pieces Can Withstand Temperatures Of 1050 deg C And The Pieces 1350 Deg C, Has An 80Mm Diameter Opening And A 22Mm Diameter Tube.
Double Convex round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, for educational uses, Size: 50mm focal length, 2in diameter and 3.5mm thick
Double Convex round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, for educational uses, Size: 200mm focal length, 2in diameter and 5.5mm thick
Double Convex round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, for educational uses, Size: 250mm focal length, 2in diameter and 4.5mm thick