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
Watch Glass/ Cover Lid for Beakers and Flasks/ Evaporation Dish, Polished with Ground Edges for safe handling, Material: glass, Quality glass, The 2.0mm glass thick construction resists shattering, Can hold small samples to use under a low-power microscope, 3.5in (9cm) in diameter
Fluval Bio-Foam performs exceptional mechanical and biological filtration. Bio-Foams dense structure is very effective at trapping small particles that are not captured in the first stage of foam filtration, for Fluv
Perisphinctes Fossil Replica, Ammonites like this one swam through the ocean while dinosaurs roamed the earth, Made from a resin designed to last through heavy classroom and laboratory use, Fossil replica of an ammonite from the Mesozoic 1.5in (4cm)
Rectangular Refraction Cell, Material: acrylic rectangular, Color: clear, excellent for showing refraction and internal reflection in water, and to measure its refractive index, has uniform wall thickness to eliminate distortions, Dimension: 6X3X6.2 CM
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