FLAWFINDER DEVELOPER is an aerosol applied white powder which is designed to draw the penetrant out of a flaw, and enhance the definition, to facilitate detection when used in conjunction with FLAWFINDER DYE PENETRANT and FLAWFINDER CLEANER SPRAYS. Highly absorbent white film for rapid results. Highlights very fine cracks. Sharp indication and geometry of defect to the naked eye. Suitable for pressure testing & leak detection.