**GMC Electrical, Inc. will be closed from 12/19/2025 (mid-day) through 1/02/2026 for the Holidays. 
Normal business hours will resume of Monday January 5th, 2026. Have a Happy Holiday Season!

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    • STAPERM Probe Coupon Test Station

    • STAPERM Probe Coupon Test Station STAPERM Probe Coupon Test Station
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      STAPERM Probe Coupon Test Station

      The GMC "STAPERM" Probe is a all in one test point utilizing and integrated steel coupon, "REPLACEABLE" permanent reference electrode and special formulated non-organic casing mud for a stable electrode environment. The unique design allows for the...

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