Industrial Test Systems Inc., of Rock Hill, S.C., announces its latest revolutionary breakthrough. DPD-1 Reagent Strip for free chlorine offers users a new, more convenient delivery system for DPD. There are no more tablets to crush, powders to spill, glass ampoule to break, or dispensers that release irritating dust. All required reagents are precisely measured and impregnated on a test strip pad. Simply dip the strip into a 10-ml water sample for 20 seconds with back and forth motion, remove, discard the strip, and immediately read in the chlorine meter.