Developer is ready to use suspensions of white developing particles in a fast drying solvent. It produces an opaque white coating which provides an excellent contrasting background for Spotcheck penetrate indications. Its no aqueous developer provide increased sensitivity through its solvent action on the penetrate at the defect site. It is compatible with and approved for use with all Magnaflux, Spotcheck and Zyglo penetrates. SKD-S2 is specially formulated to be low in sulfur and halogens and contain no chlorinated hydrocarbons. ORM-D Requires ground shipping only. Aerosol.