Magnaflux Spotcheck non-destructive testing (NDT) aerosol sprays used for liquid penetrant inspection to detect surface flaws and cracks:SKD-S2 Aerosol (Left): Solvent-based developer that creates an opaque white background to enhance the visibility of red penetrant indications.SKC-S Aerosol (Center, selected region): Cleaner/Remover used for pre-cleaning test surfaces and removing excess surface dye before developer application.SKL-SP2 Aerosol (Right): Solvent-removable red visible penetrant used to seep into surface cracks and discontinuities.