Lens, double convex, 150mm f/l

All our lenses and circular mirrors are 38 mm in diameter. The focal length (f/l) is noted for each.

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All our lenses and circular mirrors are 38 mm in diameter. The focal length (f/l) is noted for each.

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Notched metal supports hold meterstick in place to make a simple optics bench.

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Get high-quality chemistry hardware & lab supplies! This 12-piece chemistry starter kit includes a support ring, a test tube rack, beaker tongs, a pinchcock clamp, a clay pipe-stem triangle, a burner tripod stand & more!

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Lens holders for a simple optics bench; clips onto the edge of meterstick.

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Generating electricity from mud? It's a dirty little secret, but it's true! This microbial fuel cell kit, or MFC Kit, is filled with the supplies you need to build and test your own microbial fuel cells.

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This kit demonstrates the importance of water treatment plants and helps kids discover the how and why of water treatment and filtration.

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All our lenses and circular mirrors are 38 mm in diameter. The focal length (f/l) is noted for each.

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This metal burette clamp attaches to a ring stand to hold a single glass burette, test tube, flask, etc. for chemistry labs.

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A portable microscope that doubles as a telescope.

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