1. IEC 60151-19:1969 (scan) Measurements of the electrical properties of electronic tubes and valves - Part 19: Methods of measurement on corona stabilizers

2. IEC 60151-2:1963 (scan) Measurements of the electrical properties of electronic tubes and valves - Part 2: Measurement of heater or filament current

3. IEC 60151-20:1969 (scan) Measurements of the electrical properties of electronic tubes and valves - Part 20: Methods of measurement of thyratron pulse modulators

4. IEC 60151-21:1969 (scan) Measurements of the electrical properties of electronic tubes and valves - Part 21: Methods of measurement of cross-modulation in electronic tubes and valves

5. IEC 60151-22:1970 Measurements of the electrical properties of electronic tubes and valves - Part 22: Methods of measurement for cold cathode counting and indicator tubes

6. IEC 60151-23:1970 Measurements of the electrical properties of electronic tubes and valves - Part 23: Methods of measurement of vacuum pulse modulator tubes and valves

7. IEC 60151-24:1971 Measurements of the electrical properties of electronic tubes and valves - Part 24: Methods of measurement of cathode-ray charge-storage tubes

8. IEC 60151-25:1971 Measurements of the electrical properties of electronic tubes - Part 25: Methods of measurement of Geiger-Müller counter tubes

9. IEC 60151-26:1971 Measurements of the electrical properties of electronic tubes and valves - Part 26: Methods of measurement for camera tubes

10. IEC 60151-27:1974 Measurements of the electrical properties of electronic tubes and valves - Part 27: Methods of measurement for inter modulation products in transmitting tubes