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-2-FW
For Fresh Water Service
Copper-Copper Sulfate (Cu-CuSO₄)

• Size: 1" dia. x 8" long ABS plastic high impact yellow tube
• Lead Wire: 50' of #14 RHH-RHW yellow wire.
• Stability: +/- 5 millivolts with 3.0 microamp load.
• Temperature Range: +32°F to 135°F.

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

• Size: 1" dia. x 8" long ABS plastic high impact red tube
• Contac Plug: 1" diameter porous ceramic
• Lead Wire: 50' of #14 RHH-RHW black or red wire.
• Stability: +/- 5 millivolts with 3.0 microamp load.
• Temperature Range: +32°F to 135°F.