Palladium/Platinum NA2 explanation (formerly B&S Chlorate thread) So Ive heard on many fronts that using NA2 for a contrasting agent is a much better method than the Chlorate added to Ferric Oxalate in their solution #2. I am working on a series of prints and have been using the Solution #2 for contrast control and it is actually doing a pretty good job. Its rare that I use alot of the #2 solution but this one I really found it helped the negative and resulting print. Thought I would share the results with anyone whos in a similiar place as myself (still feeling their way through pt/pd printing) I still plan on trying the NA2 as contrast control in the future but have been getting fairly good results with the basic setup that comes with the B&S kit. (of course Ive long since gone through a starter kit ) heres the test strips I came up with..