I've been working out the cost of mixing my own 130 from bulk chemicals to see if I could get it down near the cost of Dektol. Ordering larger quantities of the chemicals from artcraftchemicals.com, it looks like 130 would come in at around $4/lt of stock--a lot better than the $13.25/lt the Formulary charges, but still a lot more than Dektol's ~$1.50/lt., especially considering the latter is generally used at 1+2 instead of 130's 1+1. I notice, however, that the formulas for D-72 and 130 are very similar except for the addition of glycin in the 130: To make 1 lt. stock: [TABLE="width: 500"] D-72 Ansco 130 Metol 3g 2.2g Sodium Sulfite 45g 50g Hydroquinone 12g 11g Sodium carbonate (mono) 80g 78g Potassium bromide (anhy) 2g 5.5g Glycin 11g [/TABLE] Is it possible to mix dektol stock and add the additional potassium bromide and glycin? How practically significant are the variations in the other chemicals? 11g of glycin costs around $0.11, so this would bring the total cost per liter down to well under $2.