Electrical Stability / Resistivity Tester
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    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)
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    Digital Resistivity Meter Model RC-88C
    Resistivity meters measure the resistivity of fluids, slurries or semi-solids.  These solid state electronic instruments are designed to meet the needs of field and laboratory personnel for resistivity measurement according to API procedure.
    Resistivity Range: 0.01 to 100 Ohm-Meters
    Temperature Range: 10 to 50℃