All porcelain with 80 mm diameter.

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Aluminum potassium sulfate is commonly called alum. Use this metal sulfate to learn how to grow large gem-like crystals using a seed crystal! (Dodecahydrate form)

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The most accurate low-cost scale we can find.

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A Buchner funnel is used for vacuum filtration.

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Low form 50 ml glazed porcelain crucible for high temperature use. Dimensions are about 38 mm high x 55 mm diameter.

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Our 1.0 volt solar cell module comes complete with attached wires, is approximately 6cm x 9cm, and is encapsulated in a clear plastic case for durability. Produces 0.4-0.5 watt of power output at 400-500 mA and 1.0 volt.

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Porcelain evaporating dish with 100 ml volume capacity and 90 mm diameter for heating chemical solutions.

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This porcelain mortar and pestle set is ideal for a wide variety of grinding application in the lab or at home.

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These 500 ml HST Erlenmeyer flasks are made of high-quality borosilicate glass that can be heated directly in an open flame.

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This 150 ml PYREX low-form Griffin beaker is used in professional labs. It is made from low expansion, Type 1, class A borosilicate glass that can be heated directly in an open flame.

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A traditional alcohol lamp with a 120 ml glass tank, a nickel-plated metal cap, an aluminum snuffer cap & a fiber wick! Burns ethyl alcohol (not included), which can be purchased from HST or at a hardware store near you.

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This beautiful wall chart is an invaluable tool for teaching any unit on weather and clouds.

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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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Use this great file with a sturdy wooden handle for a variety of purposes including cutting glass tubing.

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These 500 ml polypropylene cylinders have excellent chemical resistance.

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This piece of dialysis tubing can be opened up to form a sheet of semi-permeable membrane that is 3-1/2" wide by 12" long.

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This larger ring is designed to support beakers, flasks, etc. on a ring stand.

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This 10 g bottle of calcium metal turnings has a formula of Ca and is dangerous when wet. Find the metal calcium density, formula weight, and more below!

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You can hatch thousands of brine shrimp with this 6g vial of eggs.

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Investigate fluorescence with this set of 10 minerals that glow under longwave ultraviolet light.

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This fully developed rat is commonly used to study mammal anatomy. Rat species is typically Rattus norvegicus.

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Use this tool to clamp a rod at right angles to a ring stand.

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

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Make specimens last longer with our non-toxic, pre-mixed holding fluid. Extend time between dissection by adding a bit of holding fluid to zip-lock storage bags.

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This low speed DC electric motor rotates at about 1000 rpm at 1.5 volts and 1400 rpm at 3.0 volts.

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A pack of six strong, multi-colored ceramic ring magnets, 1 1/4" diameter.

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Two-ounce capacity with 30 mm stem, 6 mm-diameter stem opening. Use 11 cm filter paper.

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This black rubberized cloth lab apron provides excellent protection from chemicals in the laboratory.

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Black rubberized cloth lab aprons protects against chemicals in the laboratory.

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This stainless steel spatula and spoon combination is perfect for scooping chemicals, breaking up solids into smaller pieces and mixing.

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Kostal professional-grade insect pins are excellent quality.

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This steel hooked weight is painted with black enamel and is accurate to +/- 2%.

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Florence or boiling flasks are flat-bottomed flasks designed to boil liquids in distillations and similar operations.

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30g bottle of lead nitrate, also known as plumb dulcis and plumbous nitrate. Look below to discover the lead nitrate formula, density, shelf life & more! Lead nitrate is an oxidizer and poison; read warning labels carefully.

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This special dual function push/pull scale or dynamometer provides the flexibility to measure either pull or push forces.

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This large short stem glass funnel is made from borosilicate glass.

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