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. Three models to choose from: CU-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. ZN-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. AG-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.
Created by: Pipeline Corrosion Control
Last updated 11/2025