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A glass electrode potentiometer system for the determination of the pH values of weakly buffered solutions

Publisher
Elsevier Science
Year
1934
Tongue
English
Weight
58 KB
Volume
217
Category
Article
ISSN
0016-0032

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✦ Synopsis

centric window and extended white tab on the 65-cycle reed. It is understood that the beacon is ready for regular operation, working in conjunction with another visual-type beacon at Paris, (Le Bourget Airport), France.

In France two of the visual-type beacons are in use, the one at Paris and another at Lyon. The same modulation frequencies, 65 and 86 2/3 cycles, are used at all the beacons. The French beacons differ from the original American design in that the modulation frequencies are introduced by rotary condensers in the antenna circuits. Reed indicators identical with those originally developed by the Bureau are used. The French installations were made by the Societe d'Entreprises Electro-Techniques.

Publications describing the system state that it has proved very successful and is in daily use.

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