Interesting views from Audioholics.
Do
Handle discs by the outer edge or the center hole
Use a non solvent-based felt-tip permanent marker to mark the label side of the disc
Keep dirt or other foreign matter from the disc
Store discs upright (book style) in original jewel cases that are specified for CDs and DVDs
Return discs to their jewel cases immediately after use
Leave discs in their spindle or jewel case to minimize the effects of environmental changes
Remove the shrink wrap only when you are ready to record data on the disc
Store in a cool, dry, dark environment in which the air is clean -- relative humidity should be in the range 20% - 50% (RH) and temperature should be in the range 4°C - 20°C
Remove dirt, foreign material, fingerprints, smudges, and liquids by wiping with a clean cotton fabric in a straight line from the center of the disc toward the outer edge
Use deionized (best), distilled or soft tap water to clean your discs. For tough problems use diluted dish detergent or rubbing alcohol. Rinse and dry thoroughly with a lint-free cloth or photo lens tissue
Check the disc surface before recording
Do not
Touch the surface of the disc
Bend the disc
Store discs horizontally for a long time (years)
Open a recordable optical disc package if you are not ready to record
Expose discs to extreme heat or high humidity
Expose discs to extreme rapid temperature or humidity changes
Expose recordable discs to prolonged sunlight or other sources of UV light
Write or mark in the data area of the disc (area where the laser "reads")
Clean in a circular direction around the disc.
Very interesting about being stored Horizontally,when lots of storage cabinets are made for that method.
