File:Beckman model 72 pH meter jw827b87k.tiff

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:19, 6 August 2019		2,653 × 3,190 (24.28 MB)	Mary Mark Ockerbloom	== {{int:filedesc}} == {{Photograph \|photographer ={{unknown}} \|title =Beckman Model 72 pH Meter \|description =Beckman Model 72 pH Meter The Beckman Instruments Model 72 pH meter was a line operated version of the Model 76 Expanded Scale pH Meter, designed for routine use. Published without a copyright notice in Beckman Instruments ''Feedback'' newsletter, v3 n3, April 1960 (box 44, folder 34) \|depicted people = \|depicted place = \|date...

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