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Click on a name below to read a description of the equipment and what it is used for.
Hotplate | Mortar and Pestle | Pipet | Rubber Tube Clamp | Scoopula | Striker
Hotplates are used to heat chemicals. They can be used instead of Bunsen burners, when open flames are not appropriate in the laboratory. The heat setting is controlled via a dial on the front of the hot plate, and the plate itself is made from a chemically-resistant ceramic material.
Mortar and pestle are used to grind solid chemicals into smaller pieces. By grinding solid chemicals into smaller pieces, the solid may dissolve or react with other chemicals more quickly. The mortar is a ceramic, thick-walled bowl, while the pestle is a heavy, ceramic blunt-ended cylinder.
Pipets can be made of glass or plastic. Plastic pipets are commonly found in high school laboratories due to the durability of the plastic material. However, glass is a preferable material, due to its resistance to chemical reactivity. A pipet consists of two main parts: the bulb and the stem. Pipets are used for transferring and dispensing small volumes of liquids.
Rubber tubing has a variety of uses in the chemistry laboratory, from transferring gases to be collected, to routing water through a condenser. Sometimes it is necessary to shut off or prevent the flow of these fluids (gases and liquids); this is the purpose of a rubber tube clamp. As shown in the diagram, the rubber tubing is simply pinched inside the clamp. To form a tighter seal, the end of the tubing can be doubled over, then placed inside the clamp.
Scoopulas receive their name from their functions. Scoopulas are used to scoop (solid) chemicals and transfer them, and to scrape chemicals from containers, much like a spatula is used to scrape food from a bowl.
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Strikers consist of a flint tip that is dragged across a piece of steel. The friction generates enough heat to create sparks, and these sparks are used to ignite a Bunsen burner. Since sparks can be hazardous, strikers should only be used to light Bunsen burners. They should not be used when flammable gases are being generated or flammable liquids are being used in lab. <<Previous Page 1 2 3 Next>>
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