HM-704 is a water-washable fluorescent penetrant, Type I method A level 4 (according AMS 2644 and ISO 3452-2), designed for detecting surface defects.
Odourless.
Highly biodegradable penetrant.
The HM-x04 high and ultra-high sensitivity series was developed with a synthetic base, allowing relatively easy washing while leaving an acceptable level of background noise, considering the high levels of sensitivities proposed.