This is to clean dirt, grime, grease etc off of PVC pipe and fittings prior to cementing. The cleaner is a strong acetone. We have not tested it for this application so would suggest trying a small area first to make sure it does not effect the trim negatively.
Yes, this product does contain MEK.
This product is not intended to be used in that manner. It is designed to clean the surface of rigid pipe.
Cleaner is a good practice to use on old or dirty pipe but really not necessary for new pipe. Primer is important as part of the welding process to use right before the application of cement. Cleaner should never be used IN PLACE of Primer.
This product is a cleaner.
No, the purple dye is virtually impossible to be removed because its intended purpose is to stain the pipe and fitting surfaces as an identifier to show proper application steps were followed.
This cleaner actually is Acetone (70-100%), so if Acetone can remove the ink then seems Clear Cleaner would remove the ink.