1, I am ‘Test tube’…..!
A
test tube is a clear glass or plastic container that is much longer than its
wide, commonly has a U-shaped bottom and has an open top. Glass and special plastic test tubes are also
non-reactive. Many metals react with all
sorts of chemicals in ways that would ruin an experiment or sample.
Chemists use test
tubes to mix, heat and/or hold small quantities of chemicals for assays and
laboratory experiment. Biologists use
them to culture and handle various organisms, fluids, and samples.
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2. I am ‘Beaker’
A Beaker is a common
container in most labs. It is used for
mixing, stirring, and heating chemicals.
It is generally a cylindrical container with a flat bottom. Most also have a small spout to aid
pouring. Beaker is distinguished from a
flask, by having straight rather than sloping slides. Beakers are available in glass, and also in
metal, plastics.
Any experiment which
yields a liquid product uses a beaker to catch the liquid.
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3. CONICAL FLASK
SK’mCAn Erlenmeyer flask also known as a Conical Flask or a
titration flask, which features a flat bottom, a conical body, and a
cylindrical neck. It is named after the German Chemist Emil Erlenmeyer (1825-1909), who
created in 1860.
Erlenmeyer flasks
have wide bases, with sides that taper upward to a short vertical neck. They may be graduated, and often spots of
ground glass or enamel are used. It
differs from the beaker in its tapered body and narrow neck. Depending on the application, they may be
constructed from glass or plastic in a wide range of volumes. The mouth of the
Erlenmeyer flask may have a beaded lip that can be stopped or covered.
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4. I am 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 weighted, for heating a small amount of substance and as a
cover for a beaker. It can be used to
prevent dust or other particles entering the beaker, the watch glass does not
completely seal the beaker, so gas exchanges still occur. When used as an evaporation surface, a watch
glass allows closer observation of precipitates or crystallization.
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5. PIPPETTE
Pipette or pipet is a laboratory
tool commonly used in chemistry, biology, and medicine to transport a measured
volume of liquid.
Pipette works by
creating a partial vacuum above the liquid –holding chamber and selectively
releasing this vacuum to draw up and dispense liquid.
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6. RUBBER STOPPERS
•Rubber
stoppers in the labs are used frequently to plug flasks and test tubes. Its purpose is to prevent liquids, and gases,
escaping from their containers and also to prevent contaminants from entering
the containers.
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7. ROUND
BOTTOM FLASK/ROUND BOTTOMED FLASK
A GLASS FLASK USED IN LABORATORY FOR
HOLDING CHEMICAL LIQUIDS AND SOLUTIONS, WHICH HAS A SPHERICAL SHAPE BODY FOR
UNIFORM HEATING AND HAS CYLINDRICAL NECK. IT IS ALSO KNOWN AS A BOILING FLASK, MOST OFTEN USED WHEN HEATING
SOLUTIONS, PARTICULARLY FOR DISTILLATION.
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8. FUNNEL
Glass funnels can be
used to guard against spillage when pouring chemicals from one vessel to
another, can be fitted with filter to separate solids from liquids.
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9. GRADUATED CYLINDER
•A graduated cylinder
also called as measuring cylinder, used to measure the volume of liquids. It is used accurately to measure the volume
of chemicals for use in reactions.
