Posted By:
Tim JamesYou need to find a museum qualified framer for these.If you say "acid free" and those types of materials are used doesn't exactly mean that they are acid free.This can make your head hurt,but the term can be misleading.In framing terms "acid free" actually falls within an acceptable PH range.PH neutral is what you want to shoot for,such as,100% rag mats and so forth.A museum qualified framer will know this.All qualified framers will have a certification from PPFA,(Professional Picture Framers Association).Look for this in their add or on the door of the shop.Also,when it comes to newspapers,not only the acid contained in the paper causes the "burn" or yellowing,but exposing them to sunlight is a catalist.Museum glass is also available that reflects more UV light.It's expensive,but for valuble pieces,it's worth it.