Weston standard cell


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Weston standard cell

(ˈwɛstən)
n
(General Physics) a primary cell used as a standard of emf, producing 1.018636 volts: consists of a mercury anode and a cadmium amalgam cathode in an electrolyte of saturated cadmium sulphate. Former name: cadmium cell
[C20: from a trademark]
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For many years, the most accurate source of a known voltage was the Weston standard cell (Figure 1).
The Weston standard cell is a type of artifact standard.
The Weston standard cell can be disturbed by transport or if subjected to a change in temperature or a small electrical current.