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A grade A and AAA+

philperfect Posted messages 4 Registration date   Status Member -  
Claude Lachance Posted messages 33456 Registration date   Status Contributor Last intervention   -
Good evening everyone What do grade A and Grade AAA+ on CD-Rs mean. Thanks in advance 
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2 answers

  1.
    Claude Lachance Posted messages 33456 Registration date   Status Contributor Last intervention   1 035
     
    This is actually a ranking made by each producer to rate the quality of its products. AA+ and AAA+ have appeared in recent years and represent the top of the scale. However, you cannot compare Verbatim's AAA+ to Memorex's AAA+, for example, because they do not share the same standard. It's a bit like cognac: a producer's VSOP can have nothing to do with another producer's VSOP.
    For more detail, this, taken from https://www.repaire.net/forums/discussions/tout-sur-les-dvd-r-rw-lesquels-et-ou-les-acheter.63615/
    "What does 'grade A' mean?
    It designates media whose dye (photosensitive coating) is of high quality.
    Lower grades should be avoided (B / C).
    Quotation:
    Does it have anything to do with whether the photosensitive layer is cyanine of phthalocyanine or other azo, which seems decisive for the DVD's lifespan?
    Not only. These photoactive chemical compounds are important, but a DVDR is a whole: coating (dye), quality of polycarbonate manufacture, track record of production, etc... and thus 'grade A' denotes an optimal quality of media manufacture.
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    1. philperfect
       
      Hello Claude

      I wanted to thank you for your reply. Okay, now I’ve understood everything and it seems very clear to me.
      I’m sorry I didn’t thank you earlier but I had a hardware problem and I’m starting
      to go through my posts to catch up with all of this.

      thank you again and a thousand apologies
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      1. Claude Lachance Posted messages 33456 Registration date   Status Contributor Last intervention   1 035 > philperfect
         
        It’s kind and appreciated. Thank you!


        --
        Bring us Bobo onto the tabs and hang the ergonomists!!!
        Down with the red question mark!!!
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