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Carnegie Institution of Washington publication. . 14 15 FIG. 13. — Hydrogen electrode that can be placed in the colorimeter for calibrating the colori- metric method of determining the PH, being
KC1 Triode. A vintage vacuum radio tube by Valvo #23190 | M-Ware
TS Audio KC1 Tube Preamp With Separate Power Suppy Photo #2705991 - Canuck Audio Mart
KC1 Triode. A vintage vacuum radio tube by Tungsram. Wehrmacht #23895 | M-Ware
Maschinenteil24 | 10 tubes of special grease LUB-KC1 | buy online
TS Audio KC1 Tube Preamp With Separate Power Suppy Photo #2705981 - Canuck Audio Mart