Permanent Prepackaged Underground Reference Electrodes

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

• 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' of #14 RHH-RHW.
• Design Life: 20 years.
• Stability: +/- 5 millivolts with 3.0 microamp load.
• Temperature Range: 32°F to 132°F

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

• 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.
• Design Life: 20 years.
• Stability: +/- 5 millivolts with 3.0 microamp load.
• Temperature Range: 32°F to 150°F

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

• Size: 2" dia. x 7" long high impact ABS plastic tube.
• Packaging: Special non-polarizing backfilled in red 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.
• Design Life: 20 years.
• Stability: +/- 5 millivolts with 3.0 microamp load.
• Temperature Range: 32°F to 132°F