White powder developer for identifying flaws and defects. Application: spray an even, thin layer of developer from a distance of approx. 20 cm onto a surface treated with red defect detection paint Crick 120 (20-CRI120). Allow the developer to act for at least 7 min. Defects and microcracks appear as red dots or lines on a white background. The speed of appearance, shape and size provide information about the nature of the defect.