Spotcheck® SKD-S2 is a non-chlorinated solvent developer that meets major requirements for special alloy and nuclear applications. It is a ready to use suspension of white developing particles in a fast drying solvent. It produces an opaque white coating, which provides an excellent contrasting background for penetrant indications. SKD-S2 is specially formulated to be low in sulphur and halogens and contains no chlorinated hydrocarbons.