Does your artwork contain white mat boards with Optical Brighteners?

We all gravitate to those beautiful white mat boards.  They give such a clean, bright look to our art and photos. But did you know that many of those white mat boards contain optical brighteners which can create acid burn and ruin your piece?  Watch this  Video  to find out more info on Optical Brighteners.  By the way, @ Nainsook we use conservation mat boards that will last a lifetime!