TestPost® Test Station Markers

  • 360° visibility
  • In-mold graphics with a lifetime guarantee against peeling, chipping or fading
  • Includes 5 standard stainless steel terminals
  • Custom options include: RFID, terminals, sizes, colors, graphics and compression lugs for easier wire attachment


Related products


TestPost® markers add a terminal/test station to standard marker posts. Enclosures are constructed of Lexan® polycarbonate high-impact plastic and feature rugged stainless steel hardware. Each unit comes with five standard terminals. Special compression lugs are available for easier wire attachment. Anchor bar included with each marker. This cathodic test post is fade resistant and UV stable. Comes standard with a 3.5″ diameter shaft with 11 terminals; also available in a 1.5″ size with two standard terminals.


Custom Faceplate

TestPost Faceplate

Test posts are also available with a fully customizable faceplate. This scratch-and impact-resistant terminal faceplate withstands harsh outdoor elements and excessive handling by field crews. Permanent lettering ensures descriptions won’t wear out. Easily made to order with custom text, layout and number of holes.


Why Our TestPost® Markers are Better

Premium Construction–outdoor durable marker posts feature Lexan polycarbonate cap and 100% prime high-density polyethylene body. The UV-stabilized plastics prevent warping and can withstand harsh outdoor environments for 20-20+ years.


Embedded Graphics–unlike surface or screen-printed marker posts, our custom graphics are permanently molded into the polyethylene material. Graphics won’t fade, chip or peel and cannot be scratched off, ensuring your underground utility remains clearly marked. Permanent printing will even withstand harsh solvents used for removing graffiti.


Color Legends–high-visibility colors conform to US DOT regulations. Available in APWA uniform color codes (see chart below).


APWA Uniform Color Codes

Color Underground Utility Mains
Orange Telecommunications Utility: alarm or signal lines, fiber optic cables, or conduit
Red Electric Utility: electrical power lines, cables or conduit, and lighting cables
Yellow Oil & Natural Gas Utilities: oil, steam, petroleum, or other gaseous or flammable material
Blue Water Utility: potable water
Green Wastewater Utility: sewage and drain lines
Pink Temporary Surveys
White Proposed excavation limits or route

Additional information

Weight N/A
Dimensions N/A
Model Number

WFS-ES-0006 TestPost Test Station Marker


Gas, Harsh Environments, Oil, Outdoor Use, Safety & Compliance, Utility Labeling, Water Pipelines


Rigid PVC Plastic


6\\' or 8\\' tall. 3.5" OD

Expected Outdoor Life

Guaranteed for life against fade, peel or chip

Temperature Service Range

-40°F to 185°F

Minimum Application Temperature

Any temperature as long as the ground is not frozen


Black, Orange, Blue, Green, Red, White, Yellow

Water Resistance


Solvents Resistance


UV Resistance


Abrasion Resistance


Shelf Life

Completely Stable, Stored at 70F and 50% Relative Humidity