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Title: Direct reading pH meter, model 23A, by Electronic Instrument [Go to resource]
Description: Direct reading pH meter, model 23A, by Electronic Instruments Ltd, Richmond, Surrey [Serial No.237212A]. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: pH meters Temporal: 1950-1970 Source: Science Museum Creator: Electronic Instruments Ltd. (maker) Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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