I have a couple of quotes for fabicating new permenant display panels in the local museum and I've been getting a lot of information (some conflicting, some not) on the best material to use as backing for these display panels. So far they include:
MDF- cheap but problematic in the low emissions of Formaldehydes. Formaldehyde-free MDF is apparently available but I don't know of any suppliers.
Plywood- This has come thorugh one one quote but I haven't found any infromation on its positives or negatives for conservation.
PVC- very cheap and I understand rigid PVC doesn't contain phthlalate plasticisers that can emit trace amounts of acids. That said, I'm worried there might be other problems with this material.
None of these panels will be in direct contact with museum materal but nonetheless I want to make the responsible choice.
Can anyone lend me any advice?