Thinking back to junior high school science, you probably remember something about the PH scale, the way to determine whether something is “acid” or “alkaline”. You probably even dipped litmus paper into various fluids to test their PH.
Shurtape 724 (white) is PH neutral, meaning that its adhesive backing is neither acidic or alkaline.
Since the equipment you label with this tape might have many different sorts of finishes- painted, screened, etched, etc. , choosing a PH neutral tape means that it won’t interact with and damage the finish.