@@ FORMULARY NEW CYANOTYPE KIT was formulated by Dr. Michael Ware. The formula was published in the Jan/Feb. 1997 issue of Photo Techniques. According to Dr. Ware, The "New" Cyanotype process uses a single sensitizer solution, having a long shelf life, to make prints of an excellent stable blue color and a long tonal response. And with a speed much faster than the traditional process." It also loses little, if any, blue color in the final wash water, and is much more suited to a greater variety of papers. @@ This kit will produce approximately 50 8 x 10 prints if the sensitizer is applied with a glass coating rod, makes 100 ml (3 1/3 oz.) of solution.