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Alcohol burners are preferred for some uses over Bunsen burners for safety purposes, and in laboratories where natural gas is not available. Their flame is limited to approximately 5 centimeters (two inches) in height, with a comparatively lower temperature than the gas flame of the Bunsen burner.
Chemistry stencils that used to be used for drawing equipment in lab notebooks. A laboratory notebook ( colloq. lab notebook or lab book ) is a primary record of research . Researchers use a lab notebook to document their hypotheses , experiments and initial analysis or interpretation of these experiments.
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Alcohol has been used as an antiseptic as early as 1363, with evidence to support its use becoming available in the late 1800s. [ 32 ] At times and places of poor public sanitation (such as medieval Europe ), the consumption of alcoholic drinks was a way of avoiding water-borne diseases such as cholera .
Methanol is used as a denaturant for ethanol, the product being known as denatured alcohol or methylated spirit. This was commonly used during the US prohibition to discourage consumption of bootlegged liquor, and ended up causing several deaths. [49] It is sometimes used as a fuel in alcohol lamps, portable fire pits and camping stoves.
The alcohol-water mixture flame can be hard to detect, so sodium chloride can be added to give the flames an orange-yellow color. [1] [3] For safety purpose, a water tray should be prepared for emergency use in case a paper banknote caught a fire, and flammable and combustible materials should not be kept or put near the flame. [1]
Burning fluid lamps had two long tapering wick tubes that looked like the letter V. The tubes had caps resembling thimbles to extinguish the light and prevent evaporation when the lamp was not in use. Camphine lamps had a single fixed wick with a flame spreader and a central draft system. [6] One type of camphine lamp was called a Vesta lamp. [23]
A gas-discharge lamp is an electric light using a gas-filled tube; these include fluorescent lamps, metal-halide lamps, sodium-vapor lamps, and neon lights. Specialized gas-filled tubes such as krytrons , thyratrons , and ignitrons are used as switching devices in electric devices.