[QUOTE=nick_white;2048729]Quality Test result is perfect. Can this be true?[/quote]No. Never, ever.
ANY media has low-level errors. Even the best TY CDR burnt in the best burner and scanned in the most performant/tolerant CDR reader in my book (Samsung SH 203B) shows C1 errors.
Perfection doesn’t exist. When you think you meet it, something’s off. Either it’s your perception, or the circumstances, or the methods, or the observation scale, or the interpretation, whatever.