RC-77 is a post-emulsifiable ultra-high sensitivity fluorescent penetrant designed for inspection of critical parts, turbines blades, assemblies, welds.
Type 1, method B, C, D, level 4 according to AMS 2644 and ISO 3452-2.
RC-77 is the reference Level 4 of AMS 2644 and ISO 3452-2. The level of fluorescence allows for safe detection.