Glass Tube, 5 mm, 3" long

These #0 rubber stoppers are 13-17 mm diameter. #0 rubber stoppers fit large test tubes.

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5mm glass tubes fit in all rubber stoppers & attach to 4.8 mm plastic or rubber tubing.

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Want a real chemistry set for your kids? Look no further! This beginners chemistry set comes with all the basic lab equipment needed for chemistry experiments & projects. Get high-quality beakers, test tubes & much more!

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This activated charcoal powder is made up of pure carbon. It is used in many industries for purification processes. This chemical is flammable; please read warning labels carefully. Find its density, formula & more below!

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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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Use this Cool Blue Light Experiment Kit to learn about chemiluminescence, the real quantum leap, and how fireflies glow! With the materials and instructions inside, you can conduct several illuminating chemistry experiments.

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These tongs are useful when handling a hot crucible, evaporating dishes, flasks, and small beakers.

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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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Microchemistry (micro-scale chemistry) is ideally suited for home labs, with less bulky equipment and less mess. This MicroChem kit comes with 17 experiments!

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This kit contains the lab materials for completing the experiments in Apologia's Advanced Chemistry course.

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