Q: Are your CD sleeves acid-free? I'm specifically wondering about DSP32FC (Polypropylene), IPCGW1/WHT (Tyvek) and UNCDPRO (Univenture Polypropylene).
A: Usually when people ask about the acidity/alkalinity of a product it's because they are interested in the product's archival properties. (Because of the use of acid-free papers in archiving documents.) So, I'm going to gear my answers toward archival applications.