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Oil Bath: a Metal Jacket of Dried Oil with a Thermometer (Morfit, 1849)
A bath of hot oil that heats a flask, dish or retort evenly at temperatures above the boiling point of water. Campbell Morfit (1849) builds it exactly like his water-bath: a metal (or porcelain-lined) vessel holding the oil, with the vessel to be heated set in it, and a thermometer in the oil to read and regulate the heat. He gives up to 570 °F (about 300 °C).
The oil is first heated for several hours in an iron capsule to drive out its moisture. Which oil, and the vessel sizes, are not given.
Source: C. Morfit, Chemical and Pharmaceutic Manipulations (1849), pp. 182-185. Picture: his water-bath, Fig. 150.
초급
Several hours (drying the oil)
안내
1
1
Read Morfit
Read Morfit
"The oil should, before its transfer to the bath, be heated in an iron capsule for several hours, to expel moisture. The bath consists of a porcelain lined or metallic jacket, of construction exactly similar to that of the water-bath. It affords a temperature of 570° F., and the facility of determining its temperature, for which purpose a thermometer is a necessary accompaniment."
2
2
Dry the oil
Dry the oil
Heat the oil in an iron capsule for several hours to drive off its moisture. Do not heat it so far that it decomposes. Which oil is not given (unknown). Ours: a shallow metal pan for the iron capsule.
이 단계의 재료:
알 수 없는 재료1 oil필요한 도구:
얕은 금속 쟁반
숯 도가니로
온도계3
3
Set up the jacket
Set up the jacket
Take a metal vessel wide enough that the vessel to be heated sits inside with space at the bottom and sides (Fig. 150: the outer vessel A carries an inner flange a on which the dish B rests). Pour in the dried oil, set the thermometer in the oil, and heat on a charcoal furnace or gas stove. Sizes are not given (unknown). Ours: a metal pot.
이 단계의 재료:
솥1 개필요한 도구:
온도계숯 도가니로
알 수 없는 치수4
4
Use it
Use it
Set the flask, dish or retort in the oil and regulate the fire by the thermometer. Oil loses less by evaporation than water and gives temperatures above 100 °C, up to 570 °F (about 300 °C). Boiling oil throws off a very disagreeable vapour; keep the heat below the point where the oil decomposes.
필요한 도구:
온도계숯 도가니로이 블루프린트로 만드는 것
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