Our current procedure for the Brown and Brenn Gram stain uses 0.5 grams of picric acid to 400mls of acetone........is there a way to use a 1.3% Picric Acid solution in place of the powdered Picric Acid? Amylin Johnson, B.S. HTL(ASCP) Associates in Pathology Wausau Wi 54401 715-847-2130