[Roseburg] Medex® A brand name for a moisture resistant, medium-density Fiberboard (MDF) that is made from cellulosic fibers bonded with a polyurea-isocyanate resin, then compressed into a hardboard. Medex is waterproof, smooth, heavier than plywood and slightly acidic (pH=5.5). Medex® uses a formaldehyde-free adhesive but the wood fibers may still emit small amounts of organic acids such as acetic acid. Medex® is sustainable using a 100% post-industrial recycled wood fiber.
Synonyms and Related Terms
Medex® is commonly used as a structural material for pedestals, display decks, display panels and risers.
Produces fine wood dust. Potential eye and respiratory irritant. Dust should be collected by suction cleaning equipment.
Medex SDS 
|Pb, Zn, Cd metals||Corrosion|
|Calcium based objects (limestone, shell, coral, pearl)||Efflorescence|
|Some color photographs||Fading|
|Pb glazed ceramics||Efflorescence|
The risks of organic acids to collections can be mitigated by using barrier materials.
Links to Oddy Test results posted on AIC Wiki Materials Database Pages for individual materials below
- Standard wood product finishing processes. Medex® can be painted, stained, laminated, veneered or covered with display fabric.
- Readily accepts and holds hardware including staples, screws, other wood fastening hardware. Ideal for pressure fitting mounts.
- Panels available in 4' and 5' widths and lengths up to 18'.
- Thicknesses ranging from 3/8" - 1 and 1/4".
Resources and Citations
- The Medex® webpage on the Roseburg manufacturer's website contains links to technical data sheets, safety data sheets and other technical information (accessed 10/2019)
- Exhibit Guidelines Technical Notes: Using Composite Panels in Exhibit Case Construction