illinipdx,
I have used Stain Free several times and it works great. Evan is correct that you can get the same thing for $8.50 per lb if you order the 9lb pail through the chemistry store http://www.chemistrystore.com/Ascorbic_Acid.htm. I ordered the 2llb pail last time thanks to Marie (mbar) and it worked great. I'll never buy the Stain Free again unless I'm in a real bind due to its high price.
Now, since you have started the this thread, I have another question that fits within the topic so I'm going to piggy back your thread. Maybe Evan or Richard can help.
How about Oxalic acid? Is it any more dangerous than ascorbic? Does it work for stain removal? Here is the info: http://www.hydropool.com/cgi-bin/hyd...d_chem/pst.htm I recently picked up a 2 lb jar for $15 and thought I might give it a try but I guess I'm a little partial to the ascorbic since I know "it's just vitam C."

Dave