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A vertical barrel on a base with a gas inlet.
Also known as: Gas burner laboratory, Laboratory burner
A Bunsen burner is drawn as a vertical barrel rising from a heavy base, with a gas inlet at the bottom and an adjustable air collar near it.
Provides a controllable gas flame, the air collar setting how completely the gas burns.
Contexts: Laboratory
Is drawn with the collar because the flame's character depends on it, so a diagram that omits it has left out the burner's only control.
Contexts: Laboratory
A narrow vertical tube standing on a broad flat base, with a short side inlet and a collar drawn near its foot.