pH Pen
This pH Pen is used to detect alkali or acid residues and may be used to measure the pH of concrete to the nearest full pH value. To measure the surface pH just wet the surface with distilled water. Stroke the surface with the pencil. Wait approximately 15 seconds and compare the resulting color change with the color chart. To advance pencil lead, simply turn the pencil top clockwise. Each pencil will give the user at least 100 tests
Uses
- To evaluate the cause of corrosion when conducting corrosion surveys
- To estimate service life where penetration of the carbonation front is critical
- To monitor the effectiveness of procedures for re-alkalization of the cover layer
- To make a rough estimate of concrete strength from the age of concrete and the relative humidity