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Dear All, is PEG MME 2000 still available in powder form? I think Fluka used to sell it, but Fluka is no more and Sigma-Aldrich don't sell it. Hampton Research and Molecular Dimensions (and perhaps others) do sell 50% (w/v) solutions. Mark Mark J van Raaij Laboratorio M-4 Dpto de Estructura de Macromoléculas Centro Nacional de Biotecnología - CSIC c/Darwin 3, Campus Cantoblanco 28049 Madrid tel. 91 585 4616 email: [log in to unmask]