③Removal of surplus penetrant
First, wipe out surplus penetrant with dry waste and paper.
Next, mildly wipe out with waste and paper containing cleaning liquid so that the surface will be slightly wet.
Finally, wipe out the surplus penetrant, mildly wipe out with dry cloth, and dry the surface.
Notes
・Do not spray directly the cleaning liquid on the surface. (to keep necessary penetrant)
・Do not tightly wipe out. (to keep the penetrant in the crack and flaw.)
④Treatment by developer
Apply the developer thinly and evenly.
A portion with crack and flaw will appear redly. Observe whether or not the surface will change.
Notes
・Stir the developer well before application.
・Immediately after removing surplus penetrant, apply the developer.
・After leaving the surface untouched for 10 minutes or longer in a room temperature atmosphere, observe the surface.
(In a low temperature atmosphere of 10℃ or colder, leave it for at least 15 minutes.