Formulary's Gold Protective Toner is similar to Kodak GP-1 and offers maximum protection with little or no change to print color. However, with some prints a slight shift towards blue-black may be noted. Prints treated with Gold Protective Toner are even more stable than those toned with selenium or sulfide. This toner can also be used to protect negatives. The chemicals in this kit are used to make a working solution, which has a capacity of about eight 8x10" prints per liter.
Tech Info 06-0170 Kit
Tech Info 06-0180 Kit
Posted by Monday317 on 17th Jan 2018
When wet printing silver gelatin prints, I almost always tone in selenium, and love the juuuuust purple tone you get from it, as well as the slightly brighter highlights, which make a nice print great. Then, while on a serious, Group f/64 binge, I started using Formulary GP-1, and even using a ferrotyping plate for maximum gloss... I have to say, those prints were exciting, though a major PITA to make. The GP-1 gave a juuuuuust noticeable blue-black that, with the super print gloss made the images (boring, to tell the truth) look like museum pieces. I have seen Ansel Adams prints in galleries, and the selenium looks great after so many years. But gee, the GP-1 prints I made still look awfully good too... If money isn't too much of an object, give this stuff a try!
Posted by Unknown on 18th Oct 2017
I have only used this as a toner for Van Dykes so cannot speak to any other processes. I found it provided very rich tones and I doubt I will never make a Van Dyke without it again. I only rated it a 4 because of my limited experience with gold toners; i.e., I cannot say it is the "best." I can only say it is the best for me right now. I will buy it again without a doubt.