Betekenis van:
watch glass

watch glass
Zelfstandig naamwoord
    • laboratory glassware; a shallow glass dish used as an evaporating surface or to cover a beaker

    Hyperoniemen

    watch glass
    Zelfstandig naamwoord
    • kristal
    • a protective cover that protects the face of a watch

    Synoniemen

    Hyperoniemen

    watch glass
    Zelfstandig naamwoord
    • horlogeglas
    • a protective cover that protects the face of a watch

    Synoniemen

    Hyperoniemen


    Voorbeeldzinnen

    1. Stir with the glass rod, which shall be left in the beaker, and cover the beaker with a watch-glass.
    2. Cover the beaker with a watch glass or fit the conical flask with a reflux condenser.
    3. Cover the beaker with a watch glass and leave to stand for one hour at 25 (± 2) °C.’;
    4. Clock or watch glasses and similar glasses, glasses for non-corrective or corrective spectacles, curved, bent, hollowed or the like, not optically worked; hollow glass spheres and their segments, for the manufacture of such glasses:
    5. Place the double filter paper containing the residue on a watch glass and dry for one and a half hours in the air oven (4.3) at 100 ± 3 oC.
    6. Clock or watch glasses and similar glasses, glasses for non-corrective or corrective spectacles, curved, bent, hollowed or the like, not optically worked; hollow glass spheres and their segments, for the manufacture of such glasses
    7. Cover the beaker with a watch glass or fit the conical flask with a reflux condenser. Bring the mixture to a gentle boil over a low flame or a hot-plate and keep it there for one hour. Do not allow the product to stick to the sides of the container.