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

• 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.

STAPERM^™ Model Zn-5-PT
Zinc-Zinc Sulfate (Zn-ZnSO₄)
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.

STAPERM^™ Model AG-4-PT
Silver-Silver Chloride (Ag-AgCl)
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 150°F.