Lab equipment

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  • Lab equipment

    1. 1. Lab Equipment
    2. 2. Beaker • simple container for stirring, mixing and heating liquids • generally cylindrical in shape, with a flat bottom and a lip for pouring • available in a wide range of sizes, from one millilitre up to several litres.
    3. 3. Erlenmeyer Flask • flat, conical body, and a cylindrical neck • allows contents to be swirled or stirred during an experiment - narrow neck keeps the contents from spilling out • reduces evaporative losses compared to a beaker
    4. 4. Volumetric Flask • flat bottomed bulb with a long neck, usually fitted with a stopper • the neck has a single ring graduation mark and a label • used for making solutions to a known volume
    5. 5. Graduated Cylinder • used to accurately measure the volume of an object • more accurate and precise for this purpose than flasks and beakers
    6. 6. Test Tube• common piece of glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top, usually with a rounded U-shaped bottom• available in a multitude of lengths and widths, typically from 10 to 20 mm wide and 50 to 200 mm long
    7. 7. Beaker Tongs tongs used to carry a beaker after it has been subjected to heat and/or cold temperatures
    8. 8. Crucible Tongs tongs used to carry a crucible after it has been subjected to heat and/or cold temperatures
    9. 9. Test Tube Holder a gripping device used to carry a test tube after it has been subjected to heat and/or cold temperatures
    10. 10. Test Tube Brush a device used to clean the inside of a test tube (or other long-necked glassware)
    11. 11. Scoopula a utensil used to transfer solids (usually in powdered form)
    12. 12. Thermometer device used to measure the temperature of a substance
    13. 13. Forceps• a handheld, hinged instrument used for grasping and holding objects• used when fingers are too large to grasp small objects or when many objects need to be held at one time while hands are used to perform a task
    14. 14. Medicine Dropper • usually glass tubes tapered to a narrow point, and fitted with a rubber bulb at the top • used to transfer small quantities of liquids
    15. 15. Test Tube Rackused to hold/support test tubes containing chemicalswaiting for further operations
    16. 16. Glass Stirring Rod • a piece of lab equipment used to mix chemicals and liquids for laboratory purposes • usually made of solid glass, about the thickness of a drinking straw
    17. 17. Bunsen Burner piece of laboratory equipment that produces a single open gas flame, which is used for heating, sterilization, and combustion
    18. 18. Retort Stand a piece of scientific equipment, to which clamps can be attached to hold test tubes and other equipment (such as burettes)
    19. 19. C-Clamp a device (shaped like a “C”)used to hold or secure objects to a retort stand.
    20. 20. Burette• a vertical cylindrical piece of laboratory glassware with a volumetric graduation on its full length and a precision tap, or stopcock, on the bottom• used to dispense known amounts of a liquid in experiments for which precision is necessary, (e.g. a titration experiment)
    21. 21. Wire Mesh a semi-permeable barrier made of connected strands of metal, fiber, or other flexible/ductile material
    22. 22. Clay Triangle used to hold a crucible while the crucible is heated
    23. 23. Crucible originally used for metal, glass, and pigment production, a crucible is a container that can withstand temperatures high enough to melt or otherwise alter its contents
    24. 24. Funnel used to channel liquid or fine- grained substances into containers with a small opening
    25. 25. Filter Paper • a semi-permeable paper barrier placed perpendicular to a liquid or air flow • used to separate fine solids from liquids or air
    26. 26. Mortar & Pestle • a tool used to crush, grind, and mix solid substances • the pestle is a heavy bat- shaped object, the end of which is used for crushing and grinding • the mortar is a bowl, typically made of hard wood, ceramic or stone
    27. 27. Spot Plate • ceramic plate with small wells or depressions built into it • used to perform reactions on a very small amount of materials
    28. 28. Evaporating Dish a porcelain or ceramic dish used to used to evaporate excess water (or other solvents) to ensure that a concentrated solution or the dissolved substance is left behind
    29. 29. Petri Disha shallow glass or plasticcylindrical lidded dish thatbiologists use to culture cells
    30. 30. Watch Glass a circular, slightly curved piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, or as a cover for a beaker

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