Quote Originally Posted by Bruce Osgood View Post
The Chemistry Store
Sodium Thiosulfate 20 lb pail $1.47/lb $29.40 per pail

Art Craft
Sodium Thiosulfate penta 20 lb. $44.00
PS: The Store may not say so but they may
have the penta. The anhydrous is what you
want; more fix per pound and no chill.

A lot of formulas are from the early years of
the last century. Why else all that penta still
hanging around, still being stocked. Can any
one name a single photographic application
where the anhydrous won't do? Dan