Accurately determine the acid level of documents and papers with the sophisticated chemistry of this digital indicator pen. Simply draw a line on a paper sample and match the resulting color against the color bar on the pen’s barrel for instant pH readings from 1.0 to 12.0. Works like a felt tip marker.
Pen is 1/2” diameter by 5” long.
Product available while supplies last.
Due to fuel surcharges, additional shipping charges may apply.