Defecting fluid containing red dye with good penetration properties. Can also be washed off with water. Usage: spray an even, thin layer of red dye Crick 120 onto the cleaned surface to be inspected. Shake it vigorously beforehand. Let the dye take effect for about 10-20 minutes. Wipe off any residue with a lint-free cloth. Using water or, if necessary, grease remover Crick 110 (20-CRI110).