Hi, woud like to know has somebody tried to test their photo paper with acid marker, or tester as they are called. I found some for canvas testing.
But I am also concerned that my paper might contain acids too.
Lineco makes a acid identifier marker, then there is marvy to name few.
But I am also concerned that my paper might contain acids too.
Lineco makes a acid identifier marker, then there is marvy to name few.