Electrical Stability Tester Model EST-23E
The electrical stability (ES) of an oil-based drilling fluid is related to the stability of the emulsion and oil-wetting capability.
It conforms to the test procedure described in API Recommended Practice 13B-2.
Output voltage range:0 to 2025 V ± 25 V peak to ground (1432 RMS) Breakdown peak output current :61 micro-amps (1.59mm)