"TOLUIDINE BLUE ""0"" CERTIFIED"

C15H16CLN3 S; [92-31-9]
For epoxy sections:

0.5% toluidine blue in 0.1% sodium carbonate solution at pH 11.1

For methacrylate/acrylic sections:0.05% toluidine blue in benzoate buffer pH 4.4 (benzoic acid 0.25g, sodium benzoate 0.29g, water 200ml). p 5:3.11, "Procedures in Electron Microscopy"