Buffered ragboard
Buffered ragboard is made of 100% cotton fibres and has the same high quality level as the normal museumboard. Also the ragboard has the addition of a very special sort of calcium carbonate to the cellulose results in an aid-free buffered ragboard with an alkaline reserve.
Non-buffered ragboard
Is also made of 100% cotton fibres, is specially made to storage or frame old black and white photo’s which can not endure an alkaline environment, because a buffering with calcium carbonate gives a reaction with the silver oxides of black and white photo’s, that’s the reason why it’s unbuffered.
