PosiTest®LPD 60 ml Wetting Agent (2)

PosiTest®LPD 60 ml Wetting Agent (2) For use with the Low voltage Pinhole Detector for Metal and Concrete Substrates Includes two (2) 60mL bottles. Why use a wetting agent? Sometimes pinholes are so miniscule that water has difficulty reaching the conductive substrate underneath, especially on thicker coatings when the water must penetrate further into a pinhole to reach the substrate. In these instances, inspectors will use a surfactant (wetting agent) to lower the surface tension of the water, allowing the solution to better penetrate the pinhole.