Sodium tetraborate (Borax) and metaborate suppliers
These have probably been asked before but...
1. Besides Formulary and Tech Chem (which doesn't have metaborate), where can you buy these? Are there any suppliers in Canada?
2. On Formulary's website, when you click on the details/MSDS for Sodium Metaborate it sends you to a Mule Team sheet indicating 4 Mol, Dihydrate. My understanding is in most photgraphic formulas it is assumed to be Octahydrate, so I'm a little confused.
3. Formulary's Borax also appears to come from Mule Team. Are these Mule Team borates really "photo grade" (ie are they good/pure enough for film developers)?