CTB 3 is black magnetic ink in aerosol form for use in MPI.
CTB-3 Black Magnetic Ink (Aerosol)
CTB 3 is for use in NDT detection of surface and near sub-surface defects in ferro magnetic materials. The product can be used with Cracktest CTW6 white background to give good contrast indications in magnetic particle inspection. Correct magnetic field strength and orientation are required to enable detection of discontinuities.