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STAPERM: REF. ELECTRODES
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GMC ELECTRICAL INC
Reference Electrode

Comparison Chart

 

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GMC ELECTRICAL INC
Temperature Effect - Formula Info 2014


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GMC ELECTRICAL INC
Electrode Backfill

News Bulletin 2013

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GMC ELECTRICAL INC

STAPERM TM

CATALOG 2013-2014

 

 


********

International Orders Do Not Include Freight Charges 

 ******** 

GMC ELECTRICAL INC. will be contacting you in regards to Freight Charges and Carrier

after you have placed your order.

Any questions please call: 877-684-1949



 

GMC ELECTRICAL, INC.

QUALITY REFERENCE ELECTRODES OVER TIME.

GMC ELECTRICAL, INC. Makers of full line of GMC STAPERM™ Cathodic Protection Reference Cells, including:
GMC STAPERM™Permanent Underground Ceramic Reference Electrodes,
GMC STAPERM™ Permanent Prepackaged Reference Electrodes,
GMC STAPERM™Permanent Fresh Water Service Electrodes including: Model CU-2-FW  NSF-61 Approved 
GMC STAPERM™ "Heavy" Portable Reference Electrodes,
GMC STAPERM™ Portable Salt Water Reference Electrodes,
GMC Deltaperm Apache™ Deep Salt Water Reference Electrodes 
GMC STAPERM™ Permanent High Chloride Water Service Electrodes,
GMC STAPERM™ Permanent Thru-Hull Reference Electrodes

 

 

GMC STAPERM™
Permanent Underground
Ceramic Reference Electrodes


Permanent Ceramic Reference Electrodes for Underground and
Concrete Encased Applications (Space-Age Porous Ceramic)

 


 In Use at GMC Corrosion Since 1984. Quality You Can Trust.


 

GMC ELECTRICAL INC GMC STAPERM™ Permanent Underground Ceramic Reference Electrodes
Features
    •   Available in three sizes:
                  15 sq. in, .83" dia. x 6" long
                  28 sq. in1.5" dia. x 6" long
                  33 sq. in., 1.75" dia. X 6" long
    •   Greater surface area than other standard electrodes allows greater accuracy readings.
    •   Electrode does not dry out in arid soils. Moisture content change in soil has no effect

                              on electrode.

    •   Electrode has an infinite shelf life. Minimum service life is 30 years.
    •   Copper-copper and zinc-zinc sulfate electrodes are equipped with advanced chloride ion

                              trap to prevent chloride contamination.

    •   All electrodes are side-reading.
    •   All electrodes are color-coded for electrode type determination.

 


  

STAPERM Model CU-1-UGPC
Copper-Copper Sulfate (Cu-CuSO4)
GMC ELECTRICAL INC STAPERM™ Model CU-1-UGPC Copper-Copper Sulfate Electrode

      • Size: 1.5" dia. x 6" long, space-age ceramic tube with yellow protective
              caps.
      • Lead Wire: 50' OF #14 RHH-RHW cable.
              *Add $0.29/ft. for extra lead length.
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 135°F ( 0°C to 57.2°C). 
      • $136.00 each

 


STAPERM Model Zn-4-UGPC
Zinc-Zinc Sulfate (Zn-ZnSO4)
GMC ELECTRICAL INC. STAPERM™ Model Zn-4-UGPC Zinc-Zinc Sulfate Ceramic Reference Electrode

      • Size: 1.5" dia. x 6" long, space-age ceramic tube with red protective caps.
      • Lead Wire: 50' OF #14 RHH-RHW cable.
              *Add $0.29/ft. for extra lead length.
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 135°F ( 0°C to 57.2°C). 
      • $136.00 each

 


STAPERM Model AG-4-UGPC
Silver-Silver Chloride (Ag-AgCl)
GMC ELECTRICAL INC. STAPERM Model AG-4-UGPC Silver-Silver Chloride Ceramic Reference Electrode

      • Size: 1.5" dia. x 6" long, space-age ceramic tube with blue protective caps
      • Lead Wire: 50' OF #14 RHH-RHW cable.
              *Add $0.29/ft. for extra lead length.
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 135°F ( 0°C to 57.2°C). 
      • $168.00 each

 



 

 


GMC STAPERM™
Underground Reference Electrodes


  

Permanent Prepackaged Underground Reference Electrodes

 

GMC ELECTRICAL INC. STAPERM™ Permanent Prepackaged Reference Electrodes 


 Used by Industry Since 1971


 

 

STAPERM Model CU-1-UG
Copper-Copper Sulfate (Cu-CuSO4)

 GMC ELECTRICAL INC. STAPERM™ Model CU-1-UG Copper-Copper Sulfate Permanently Prepackaged Underground Reference Electrode

      • Size: 2" dia. x 7" long high impact ABS plastic tube.
      • Packaging: Special non-polarizing backfilled in yellow cotton bag.
      • Overall size: Approx. 6" dia. x 14" long.
      • Weight: Approx. 15 lbs.
      • Special sizes: Upon request.
      • Reinforcing Rods: 1/4" x 3" PVC at electrode end.
      • Lead Wire: standard 50' ft. of AWG #14 RHW cable.
           
         *Add  $0.29/ft. for extra lead length.
      • Design Life: 30 years.
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 150°F

 

      • $136.00 each




STAPERM Model Zn-4-UG
Zinc-Zinc Sulfate (Zn-ZnSO4)

 GMC ELECTRICAL INC. STAPERM™ Model Zn-4-UG Zinc-Zinc Sulfate Permanent Prepackaged Underground Reference Electrode

      • Size: 2" dia. x 7" long high impact ABS plastic tube.
      • Packaging: Special non-polarizing backfilled in red cotton bag.
             *Add $0.29/ft. for extra lead length.
      • Overall size: Approx. 6" dia. x 14" long.
      • Weight: Approx. 15 lbs.
      • Special sizes: Upon request.
      • Reinforcing Rods: 1/4" x 3" PVC at electrode end.
      • Lead Wire: Standard 50' of #14 RHH-RHW.
      • Design Life: 30 years.
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 150°F

 

      • $136.00 each

 

 

  

STAPERM Model AG-4-UG
Silver-Silver Chloride (Ag-AgCl)

 GMC ELECTRICAL INC. STAPERM™ Model AG-4-UG Silver-Silver Chloride Permanent Prepackaged Underground Reference Electrode

      • Size: 2" dia. x 7" long high impact ABS plastic tube.
      • Packaging: Special non-polarizing backfilled in blue cotton bag.
      • Overall size: Approx. 6" dia. x 14" long.
      • Weight: Approx. 15 lbs.
      • Special sizes: Upon request.
      • Reinforcing Rods: 1/4" x 3" PVC at electrode end.
      • Lead Wire: Standard 50' of #14 RHH-RHW
            
         *Add $0.29/ft. for extra length
      • Design Life: 30 years.
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 150°F

 

      • $168.00 each

 

 

 



 

 

 

 

 

  


GMC STAPERM™
Permanent Fresh Water
Service Electrodes


In Use Since 1984. Quality You Can Trust.

 

GMC ELECTICAL INC. STAPERM™ Permanent Fresh Water
Service Electrodes 

Features

      • Color-coded for easy identification
      • Infinite shelf life
      • Minimum service life 30 years
      • High impact ABS plastic housing
      • Corrosive environment restraint
      • Chloride ion trap equipped copper sulfate and zinc sulfate

STAPERM Model CU-2-FW
For Fresh Water Servic
e

NSF-61 APPROVED
Copper-Copper Sulfate (Cu-CuSO4)

 GMC ELECTRICAL INC. STAPERM™ Model CU-2-FW For Fresh Water Service NSF-61 Approved Permanent Fresh Water
Service Electrode

      • Size: 1" dia. x 8" long ABS plastic high impact yellow tube.
      • Lead Wire: 50' OF #14 RHH-RHW cable. 
              *
        Add $0.29/ft. for extra lead length).
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 135°F ( 0°C to 57.2°C). 
      • $136.00 each

 


STAPERM Model Zn-4-FW
For Fresh Water Service
Zinc-Zinc Sulfate (Zn-ZnSO4)

 GMC ELECTRICAL INC. STAPERM™ Model Zn-4-FW Zinc-Zinc Sulfate Electrode For Fresh Water Service

      • Size: 1" dia. x 8" long ABS plastic high impact red tube.
      • Contact Plug: 1" diameter porous ceramic
      • Lead Wire: 50' OF #14 RHH-RHW yellow.
              *Add $0.29/ft. for extra lead length.
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 135°F ( 0°C to 57.2°C). 
      • $136.00 each

 



 

 

 

 

  


 GMC STAPERM™
Portable Reference Electrodes


 
Liquid or Gelatin Filled Rechargeable Space
Age Ceramic Plugs Pointed, Round or Flat


 Quality You Can Trust.


 

 

 

Features

      • Color-coded for easy identification
      • Infinite shelf life
      • Minimum service life 20 years
      • High impact ABS plastic housing
      • Corrosive environment resistant
      • Chloride ion trap equipped copper sulfate and zinc sulfate

STAPERM Model CU-4-PT
Copper-Copper Sulfate (Cu-CuSO4)
Portable Reference Electrode

 GMC ELECTRICAL INC. STAPERM™ Model CU-4-PT Copper-Copper Sulfate Portable Reference Electrode

              Portable Liquid Gel Filled cell is equipped with a refillable tube, available with round

              or ceramic plug. "For Refill" chose wither copper sulphate gelatin or copper sulphate

              crystals.

      • Connection Stud: 1/4"-20 copper
      • Size: 1" dia. x 8" long ABS plastic high impact yellow housing
      • Stability: +/- 10 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 135°F ( 0°C to 57.2°C). 
      • $94.00 each

 

 


STAPERM Model Zn-5-PT
Zinc-Zinc Sulfate (Zn-ZnSO4)
Portable Reference Electrode

 GMC ELECTRICAL INC. STAPERM™ Model Zn-5-PT Zinc-Zinc Sulfate Portable Reference Electrode

      • Connection Stud: 1/4"-20 plated brass
      • Size: 1" dia. x 8" long ABS plastic high impact red housing
      • Stability: +/- 10 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 135°F ( 0°C to 57.2°C). 
      • $94.00 each



STAPERM Model AG-4-PT
Silver-Silver Chloride (Ag-AgCl)
Portable Reference Electrode

 GMC ELECTRICAL INC. STAPERM™ Model AG-4-PT Silver-Silver Chloride Portable Reference Electrode

      • Connection Stud: 1/4"-20 plated brass
      • Size: 1" dia. x 8" long ABS plastic high impact blue housing
      • Stability: +/- 10 millivolts with 3.0 microamp load.
      • Temperature Range: 32°F to 135°F ( 0°C to 57.2°C). 
      • $110.00 each




 

 

 

 


 GMC STAPERM™
"Heavy"
Portable Reference Electrodes


Liquid or Gelatin Filled Porous Ceramic Contact Plug


 

Features   

  • Color coded for easy  identification.
  • Infinite shelf life
  • Minimum service life 20 years.
  • PVC plastic housing, corrosive
        environment resistant.
  • Chloride ion trap equipped
        copper sulfate and zinc sulfate.

 

GMC ELECTRICAL INC. STAPERM™ Model CU-4-PTH Copper-Copper Sulfate "Heavy" Portable Reference Electrode

GMC ELECTRICAL INC. STAPERM™ Model ZN-5-PTH Zinc-Zinc Sulfate "Heavy" Portable Reference Electrode GMC ELECTRICAL INC. STAPERM™ Model AG-4-PTH Silver-Silver Chloride "Heavy" Portable Reference Electrode

 

Three models to choose from:

 

STAPERMCU-4-PTH
 

Copper-Copper Sulfate (Cu-CuSO4)
"Heavy" Liquid or Gelatin Filled
Portable Reference Electrode

  • Connection Stud: 3/8" copper.
  • Size: 2" dia x  4. long PVC yellow tube.
  • Stability:  +/- 5 millivolts with 3 microamp load
  • Temperature Range: 32°F to 135°F.
  • $110.00

 

STAPERMZN-5-PTH
 

Zinc-Zinc Sulfate (Zn-ZnSO4)
"Heavy" Liquid or Gelatin Filled
Portable Reference Electrode

  • Connection Stud: 3/8" copper.
  • Size: 2" dia x  4. long PVC red tube.
  • Stability:  +/- 5 millivolts with 3 microamp load
  • Temperature Range: 32°F to 135°F.
  • $110.00


STAPERMAG-4-PTH
 

Silver-Silver Chloride (Ag-AgCl)
"Heavy" Liquid or Gelatin Filled
Portable Reference Electrode

 

  • Connection Stud: 3/8" copper.
  • Size: 2" dia x  4. long PVC blue tube.
  • Stability:  +/- 5 millivolts with 3 microamp load
  • Temperature Range: 32°F to 135°F.
  • $115.00


 

  



 

 

 

 


 GMC STAPERM™
Silver - Silver Chloride
Portable Salt Water Reference Electrodes


 
Portable silver - silver chloride reference electrodes for use in:

  estuaries brackish water river mouths

  sea water high chloride waters

 

Quality You Can Trust.  Three Models to Choose From.

 

STAPERMModel AG-4-PT1

This portable electrode is rugged for deep water use and can be used in salt water and saturated saline water conditions such as offshore platforms, offshore pipelines and seawater docks (SSP).

Features
  • Tapered end caps protect sealed connection and eliminate platform/dock snags.
  • Special PVC housing for streamlined attachment of electrode weights.
  • Electrodes color-coded blue for ease of cell type determination.
  • Special silver-silver chloride rod allows for calibration and chloridizing repair if needed in field prior to use.
  • Ideal for use with R.O.V. equipment.
  • Available in dual element upon request.
  • Standard weights: 1 ¼ lbs, 2 ½ lbs, 3 ¾ lbs.
  • Electrode size: 1 5/16" dia. x 9" long.

 

  • with 1 1/4lb weight  $234.00 ea


  

  • with 3 3/4 lb weight $262.00 ea 

 

 

GMC ELECTRICAL INC. STAPERM™ Model AG-4-PT1 Portable Salt Water Reference Electrode


 

STAPERMModel AG-4-PT2

 GMC ELECTRICAL INC. STAPERM™ Model AG-4-PT2 Portable Salt Water Reference Electrode

Portable electrode designed for standard everyday use in 0 -100' water depths. Can be used in salt water and saturated saline water conditions such as offshore platforms, offshore pipelines, seawater docks (SSP) and boats or ships.

Features

  • High-impact ABS plastic housing with 50'of RHH-RHW cable.
  • Pre-weighted- weight Attachment added upon request with 1# weight add $25.00
  • Special silver - silver chloride element allows for calibration and chloridizing repair if
         needed in the field prior to use.
  • Ideal for medium to light potential work
  • Color coded blue for ease of electrode type determination,
  • 1" dia. x 8" long.

 

  • $120.00 ea

 


 

STAPERMModel AG-4-PT3

 GMC ELECTRICAL INC. STAPERM™ Model AG-4-PT3 Portable Salt Water Reference Electrode

Portable electrode designed for light everyday use for performing potential surveys on private yachts and boats.

Features:

  • High-impact ABS plastic housing with 25’ of #14 tinned copper cable, marine grade.
        *Add $0.40/ft. for extra lead length
  • Pre-weighted.
  • Special silver - silver chloride element allows for calibration and chloridizing repair if
         needed in the field prior to use.
  • Ideal for performing potential surveys on yachts and small boats
  • Color coded light blue for ease of electrode type determination,
  • 1" dia. x 5" long.

 

  • $88.00 ea

 

 

 



 

 

  

 


 GMC STAPERM™
Permanent High Chloride Water
Service Electrodes


 In Use Since 1984. Quality You Can Trust.

 

STAPERM™ Model AG-3-SW
For Salt Water Service

Silver-Silver Chloride (Ag-AgCl)

 GMC ELECTRICAL INC. STAPERM™ Model AG-3-SW Silver-Silver Chloride Permanent High Chloride Water
Service Electrode

      • Size:1" dia. x 8" long ABS plastic high impact blue tube
      • Contact Plug: 1" diameter porous cermaic
      • Lead Wire: 50' of #14 RHH-RHW black or blue wire.
             *Add $0.29/ft. for extra lead length.
      • Stability: +/- 5 millivolts with 3.0 microamp load.
      • Temperature Range:32°F to 135°F ( 0°C to 57.2°C).
      • Service Life: 30 years
      • $168.00 each

 

 



 

 

 

 


 GMC Deltaperm Apache™
Silver - Silver Chloride
Deep Salt Water Reference Electrode


 
Permanent / portable, highly stable, deep-water silver - silver chloride
reference electrode for use in salt water or saline water conditions:

offshore platforms offshore drilling rigs offshore pipelines
seawater docks steel sheet pile.


In Use Since 1984 – Quality You Can Trust.

 

 

GMC ELECTRICAL INC. GMC Deltaperm Apache™ Silver - Silver Chloride
Deep Salt Water Reference Electrode

AG-5-SW

Specifications:

      • Size: 1 ½"x 8" long slotted PVC plastic pipe,
              color coded blue.Available with
                      5, 10, 15 & 20 lb weights
      • Lead Wire: Std. 50' of #10 RHH-RHW (black)
             *Add $0.40/ft. for extra lead length
      • Porous Ceramic Filter Tube: Implosion proof filter chamber
      • Silver Rod: Chloridized and coiled, .999 pure silver element
      • 1/2" dia. female pipe fitting for media backflush and weight
              attachment.
      • Design Life: 20 years.
      • Stability: +/- 5 millivolts with 10 microamp load.
      • Temperature: 32°F to 150°

 

Features:

      • Special ceramic filter tube with seawater chamber eliminates
              pressure implosion.
      • Self equalizing.
      • Special slotted 1 1/2" PVC protective outer case
      • High-quality tapered end caps protect connection and eliminate
              platform / dock snags.
      • Special backflush fitting allows filter media to be backflushed without
              cell removal. Fitting can be used for special weight attachment.
      • Electrode color coded blue for ease of cell determination.
      • Special silver-silver chloride rod allows for in-place calibration and
             chloridizing repair if needed.

 

      • $351.00 each

 

 

 



 

 

 

 


  

 GMC STAPERM™
Permanent Thru-Hull Reference

 Electrodes


 
Available in Three Models:

  Copper-Copper SulfateZinc-Zinc Sulfate Silver-Silver Chloride


 Quality You Can Trust.

 

      

GMC ELECTRICAL INC. STAPERM™
Permanent Thru-Hull Reference
 Electrode

The GMC STAPERM™ thru-hull mounting assembly is designed to provide easy installation of special submersible STAPERM™ reference electrodes. Each electrode comes complete with a test lead junction box, electrode sealing system and 3/4" NPT threaded fitting for mounting directly through the structure wall. The electrode can be readily removed and reinstalled from the exterior of the vessel (not under pressure).

 

 

MODEL CU-6-TH COPPER-COPPER SULFATE ELECTRODES ARE
 NSF-61 APPROVED

Specifications:   

 

  • Minimum 20-year service life

  • 1/2" x 6" long Teflon tube mounted in high pressure packing gland
    with 3/4 NPT.

  • Pressure Rating 350 PSI

  • Stability +/- 5 millivolts with 3.0 microamp load

  • Temperature limit 140°F

  •  

     Copper Copper Sulfate CU-6-TH
    NSF-61 APPROVED
    $694.00 each

     

    GMC ELECTRICAL INC. STAPERM™ CU-6-TH Copper-Copper Sulfate NSF-61 Approved
Permanent Thru-Hull Reference Electrode

 Electrodes
 
     Zinc Zinc Sulfate ZN-6-TH
    $694.00 each

     

     

    GMC ELECTRICAL INC. STAPERM™ ZN-6-TH Zinc-Zinc Sulfate 
Permanent Thru-Hull Reference Electrode 

    Silver Silver Chloride AG-6-TH
    $709.00 each

     

     

    GMC ELECTRICAL INC. STAPERM™ AG-6-TH Silver-Silveer Chloride Permanent Thru-Hull Reference Electrode 

     

     



     

     

     


    GMC STAPERM™Contact Eliminator Reference Casing


     

     

    The GMC "Contact Eliminator" is designed to be used in areas where electrode to earth electrical contact is questioned. Its body is a standard 2 ½" dia. x 6' long Schedule 40 PVC special slotted casing. The slotted end of the casing has a special permeable ½" thick casing seal designed to retain moisture around the casing. The casing is filled with GMC "Fast-Gel" (a special low resistivity contact mud) NSF-60 APPROVED).

    The casing "Contact Eliminator" Kit comes with the 6' sealed casing, 2 ½" dia. casing plug with ¼"-20 threaded studs for testing (T/S) and "Fast-Gel" non-orgnaic mud powder.

    Features

    2 1/2" dia. x 6' long Schedule 40 PVC with special slotted casing.

    Special designed casing seal to retain moisture.

    •  

    FastGel Powder

    Special low resistivity non-organic NSF-60 APPROVED backfill.

    Special casing plug with built-in test station lugs.

    Three models:

    Copper CEF-7-YEL $141.00 each

     

    Zinc CEF-7-RED $141.00 each

     

    Silver CEF-7-BLU $162.00 each