How to determine quality of CD-R and DVD-R discs?

CD-R determine discs DVD-R quality
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How to determine quality of CD-R and DVD-R discs?

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(1). No burr, nor indent on the circular edges of the disc. (2). Silk screening, if applied: clear£¬no pinhole, the color is smooth and even. (3). No scratch. No damage to the discs.