Protein gurus. Numerous vendors sell this type of stain. Essentially it's either Ammonium Sulfate, Aluminum Sulfate plus Ethanol and Phosphoric Acid along with some Coomasie Brilliant Blue. The commercial stains come as a 1x and are generally brown or light green in color. My numerous attempts to replicate this have resulted in blue solutions that were far too dark. Any tips/tricks, protocols? Paying $80 for 1 liter of 1x stain gets pricey. Thank you in advance.