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ID = 35478
Tube type:  Screen-grid Tetrode 
Identical to 931_Beckman
Similar Tubes
Normally replaceable-slightly different:

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Description Electrometer tube for pH-meter, specially selected for Beckman Instruments. 
Text in other languages (may differ)
Information source - - Manufacturers Literature   Manual for Beckman pH-meter type G

Just Qvigstad
Usage in Models 1= 1957

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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