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  2. Beaker (laboratory equipment) - Wikipedia

    en.wikipedia.org/wiki/Beaker_(laboratory_equipment)

    Alternatively, a beaker may be covered with another larger beaker that has been inverted, though a watch glass is preferable. Beakers are often graduated, that is, marked on the side with lines indicating the volume contained. For instance, a 250 mL beaker might be marked with lines to indicate 50, 100, 150, 200, and 250 mL of volume.

  3. Erlenmeyer flask - Wikipedia

    en.wikipedia.org/wiki/Erlenmeyer_flask

    They may be graduated, and often have spots of ground glass or enamel where they can be labeled with a pencil. It differs from the beaker in its tapered body and narrow neck. [4] Depending on the application, they may be constructed from glass or plastic, [5] in a wide range of volumes. [6]

  4. File:Beakers diagrams.svg - Wikipedia

    en.wikipedia.org/wiki/File:Beakers_diagrams.svg

    The following other wikis use this file: Usage on bn.wikipedia.org বিকার (পরীক্ষাগার সামগ্রী) Usage on ca.wikipedia.org

  5. Laboratory flask - Wikipedia

    en.wikipedia.org/wiki/Laboratory_flask

    Beaker (glassware) Many of these flasks can be wrapped in a protective outer layer of glass, leaving a gap between the inner and outer walls. These are called jacketed flasks; they are often used in a reaction using a cooling fluid.

  6. Laboratory glassware - Wikipedia

    en.wikipedia.org/wiki/Laboratory_glassware

    Glass evaporating dishes, such as watch glasses, are primarily used as an evaporating surface (though they may be used to cover a beaker.) The Petri dish is a flat dish filled with a nutritious gelatin that allows for microorganisms to quickly grow, its named after its inventor Julius Petri in the 1880s.

  7. Watch glass - Wikipedia

    en.wikipedia.org/wiki/Watch_glass

    A watch glass is a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance, and as a cover for a beaker. When used to cover beakers, the purpose is generally to prevent dust or other particles from entering the beaker; the watch glass does ...

  8. Separatory funnel - Wikipedia

    en.wikipedia.org/wiki/Separatory_funnel

    The aqueous phase is being drained into the beaker. A separatory funnel, also known as a separation funnel, separating funnel, or colloquially sep funnel, is a piece of laboratory glassware used in liquid-liquid extractions to separate (partition) the components of a mixture into two immiscible solvent phases of different densities. [1]

  9. Crucible tongs - Wikipedia

    en.wikipedia.org/wiki/Crucible_tongs

    Crucible tongs are used most often with crucibles, small ceramic or metal vessels used to heat chemicals to temperatures up to 565.56 degree Celsius. [3]As a crucible will be very hot when heating it in a furnace or a Bunsen burner, one cannot hold the crucible directly.