Accession No

4307

Brief Description

Weston Normal Electrochemical Cell, by Robert W. Paul, English, dec. 1910

Origin

England; London

Maker

Paul, Robert W.

Class

electrical

Earliest Date

1900

Latest Date

1920

Inscription Date

Material

metal (mercury; cadmium (sulfate solution); brass); plastic (ebonite); glass

Dimensions

height 121mm; diameter 132mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

“WESTON / NORMAL CADMIUM / STANDARD / CELL” (on top of case);
“Robt. W. Paul. London. N.” (on base)

Description Notes

Weston Normal Cell (cadmium / mercury electrochemical standard cell), by Robt. W. Paul, dec. 1910.

Circular brass and ebonite base; two brass terminals; vertical rod supports H-shaped glass cell, each containing a clear liquid (cadmium and mercury sulfate solution) and mercury; cylindrical brass cover held on to rod with brass nut.

Condition: good; complete

WARNING: Cadmium is a poisonous metal (carcinogenic) that is extremely toxic even in low concentrations, and will bioaccumulate in organisms. Mercury is also a poisonous toxin. The cell in this object currently appears intact, but this object should be treated with EXTREME CAUTION. See ‘Hazardous Materials’ section of catalogue entry for further information.

References

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