When There's No Cure

Using these tapes may be the simplest way to check for spectral output, says Naughton. "The tape can be placed on the substrate and run through the curing system, preferably at the same rate of speed you are intending to cure at. If the tape changes color, it means that the proper wavelength of light is being produced for curing; if the color does not change it could mean any number of problems may exist." He cautions, though, that standard tapes only measure spectral range, not actual intensity.