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pH-Meter Type G Equipment Beckman Instruments, Shasta, Shockley;
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Beckman Model G pH Meter - Chempedia
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pH-Meter Type G Equipment Beckman Instruments, Shasta, Shockley;
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1950 Vintage BECKMAN GLASS ELECTRODE pH METER Model G Nat'l Tech.Lab. Pasadena | #1812236558
Beckman model G pH Meter | Science Museum Group Collection
1950 Vintage BECKMAN GLASS ELECTRODE pH METER Model G Nat'l Tech.Lab. Pasadena | #1812236558
pH Meter | National Museum of American History
Beckman Model G pH Meter with open lid and compartment - Science History Institute Digital Collections
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Beckman Model G Glass Electrode pH Meter - Science History Institute Digital Collections
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Model G pH Meter
Beckman Model G pH Meter | InstAppraisal
