A simple flowmeter for unusual gases.
A flowmeter is described which may be used to measure gas flow in experimental situations. It may be adapted for use with any gas or gas mixture and be used to provide flows as small as 50 ml min-1. A mercury-in-glass manometer (sphygmomanometer) is used to measure the gas pressure proximal to a flow restrictor (consisting of a hypodermic needle hub) and it is this pressure head which, for a given gas, dictates the flow produced. This device may be produced at minimal cost in any hospital, is easy to calibrate and accurate.
Farquhar
I
I
University Department of Anaesthesia, University Hospital, Nottingham.
Eldridge
P
P
D000777:Anesthetics / Q000008:administration & dosage; D000818:Animals; D002138:Calibration; D004867:Equipment Design; D005740:Gases; D008365:Manometry / Q000295:instrumentation; D012212:Rheology
D000777:Anesthetics; D005740:Gases