SENTINEL™ offers a wide variety of Spotcheck and Zyglo penetrants. Spotcheck is a red visible non-destructive testing method which provides for the detection of surface discontinuities (flaws) in ferrous and non-ferrous test materials. Spotcheck penetrants are ideal for NDT applications when portability is required. They are available in aerosol and liquid form, and the red color makes Spotcheck penetrants great for daylight inspection.
Zyglo is an extremely sensitive fluorescent penetrant inspection method that reveals cracks and other surface discontinuities in virtually any non-porous material. Zyglo is also available in aerosol or liquid form, and is formulated to offer improved sensitivity, brightness and resistance to over washing.