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Title: Direct reading pH meter, model 23, (serial no.23224). E.I.L. [Go to resource]
Description: Direct reading pH meter, model 23, (serial no.23224). E.I.L., Richmond, Surrey, 1947-1960 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: pH meter Temporal: 1947-1960 Source: Science Museum Creator: Electronic Instruments Ltd. Identifier: 1984-635/1 Go to resource More Like this...
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