Karren, is 99% pure good for class?

http://cgi.ebay.com/5LB-Sodium-Carbonate-Soda-Ash-/150572062068?pt=LH_DefaultDomain_0&hash=item230ecb5574

Comments

Karren K. Brito

There are two different soda ashes out there, mono- hydrate and deca-hydrate sodium carbonate, or sometimes call light soda ash-- both work.  This stuff is hard to dissolve so make sure it is a fine ganular solid, not lumps.