Supplier sought for A4M methyl cellulose

Does anyone know of a supplier in Europe or the United States that
is stocking A4M methyl cellulose?

Paul Hepworth
Manuscript Conservator
Rare Books Library
Istanbul University
34452 Beyazit
Istanbul
Turkey


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                  Conservation DistList Instance 29:26
                 Distributed: Sunday, November 15, 2015
                       Message Id: cdl-29-26-014
                                  ***