On a different topic, cars in my neighborhood seem to be getting louder lately. I wish people would keep their cars properly running.
Edited...PS...3 to 7 grams per converter. The auto industry is trying to find ways to reduce this by 70 to 90% by using nano-particles of the metals. Seven grams = about 0.25 oz, so when platinum hit $2000+ an ounce, that's $500 worth of platinum!
Obviously I need to improve my extraction method -- I should be able to get a whole portfolio of 8x10 prints out of one converter! If not several editions of a portfolio! :o There is only 5 grams of platinum salts in a 25 ml bottle! (And I have no idea how much of the platinum metal that represents).