VMD 139 White Crack Developer is the final & crucial step in non-destructive weld inspection, designed to reveal hidden cracks, porosity, and defects in metal surfaces. When used with VMD 138 Penetrant, it forms a high-contrast white background, making red defect marks clearly visible for precise quality control.

Ideal for weld inspectors, metallurgists, and industrial maintenance teams, this developer ensures fast, accurate defect detection without damaging materials. A must-have for automotive, aerospace, construction, and manufacturing safety checks!

Main Product Description with Technical Specifications

✅ Application:

• Used after VMD 138 Red Penetrant in crack detection

• Spray-on formula for easy, even coating

• Quick-drying, leaves a fine white film

✅ Features:

• High-visibility contrast – Defects appear as red marks

• Non-destructive – Safe for all metals

• Fast-acting – Shows defects within minutes

• Compatible with VMD 137 Cleaner & VMD 138 Penetrant

✅ Industries:

• Welding & fabrication

• Aerospace & automotive

• Foundries & metal casting

• Industrial maintenance