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A watch glass is sometimes used to measure small amounts of solids and evaporate miscellaneous liquids/ chemicals in a laboratory.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoThey are useful for staining samples of biological tissue as only a small amount of stain needs to be added which will then sit in the centre of the watch glass.
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What is a watch glass used for?
A watchglass can be used as a beaker cover, but you can also place small amounts of chemicals on it and then heat it (for example, to evaporate some water from a wet chemical).From Wikipedia:A watch glass is a circular, slightly concave piece of glass used in chemistry as a surface to evaporate a liquid, or as a cover for a beaker. The latter use is generally applied to prevent dust or other particles entering the beaker; the watch glass does not completely seal the beaker, and so gas exchanges still occur. When used as an evaporation surface, a watch glass allows closer observation of precipitates or crystallisation, and can be placed on a surface of contrasting colour to improve the visibility overall. Watch glasses are so named because they are identical to the glass used for the front of old-fashioned pocket watches. In reference to this, large watch glasses are occasionally known as clock glasses.See the Related Questions and Web Links to the left for a picture of watch glass and more information about other laboratory apparatus.
Is the glass magnifying glass the same as the glass of eyeglasses?
Yes, its just that a magnifying glass has a different prescription than eyeglasses.
What are the uses for ordinary glass?
window panes, eye glasses, drinking glasses, glass bricks, light bulbs, tv screens.
Uses of staining rack?
used to hold the glass glides while staining them. (:
What general type of microscope uses bright illumination an multiple glass lenses?
samplesThe optical microscope
What the uses of watch glass?
They are useful for staining samples of biological tissue as only a small amount of stain needs to be added which will then sit in the centre of the watch glass.
What is the name of lens the watch makers glass is a?
The magnifying lens that a watchmaker uses for detail work is called a loop.
What is uses of watch glasses?
They are useful for staining samples of biological tissue as only a small amount of stain needs to be added which will then sit in the centre of the watch glass.
Uses of a watch glass?
For example to contain a sample to be weighed; or to make a chemical reaction at small scale; or to cover a beaker.
What is the scientific symbol for a watch-glass?
A watch glass hasn't a symbol.
What is a watch glass used for?
A watchglass can be used as a beaker cover, but you can also place small amounts of chemicals on it and then heat it (for example, to evaporate some water from a wet chemical).From Wikipedia:A watch glass is a circular, slightly concave piece of glass used in chemistry as a surface to evaporate a liquid, or as a cover for a beaker. The latter use is generally applied to prevent dust or other particles entering the beaker; the watch glass does not completely seal the beaker, and so gas exchanges still occur. When used as an evaporation surface, a watch glass allows closer observation of precipitates or crystallisation, and can be placed on a surface of contrasting colour to improve the visibility overall. Watch glasses are so named because they are identical to the glass used for the front of old-fashioned pocket watches. In reference to this, large watch glasses are occasionally known as clock glasses.See the Related Questions and Web Links to the left for a picture of watch glass and more information about other laboratory apparatus.
Who uses bullet proof glass?
For one, the US President uses bullet proof glass.
Who uses bullet-proof glass?
For one, the US President uses bullet proof glass.
What is the use of watch-glass in laboratory?
because glass is transparent
Is a watch glass and container the same thing?
A watch glass is a very shallow, round piece of glass that is curved. It is usually not used as a container, but as a cover for a beaker.
Procedure of watch glass?
Glass bending procedure without dents
How would you measure 5 grams of salt?
I would place the watch glass on a balance, and then zero out the balance with the watch glass placed in the tray. After the balance is balanced with the watch glass, I would move the weights to represent an added five grams. I would then slowly add calcium chloride to the watch glass until the balance rebalances or zeroes out.
