Thank you for your comment. There is no fix correct dwell time for fluorescent penetration .It is set by the inspector under various conditions and trials.
@salmanthahah87843 жыл бұрын
Ooh..Thank you
@alitagizade63373 жыл бұрын
Did u apply developer?
@ruwaidazuraidi43063 жыл бұрын
This video really help me for the assignment! Thankyou