Chemistry Store vs Soap Goods for STPP
For large quantities (e.g. multiple small units making up approx. 50 lbs. total), Chemistry Store's lower prices outweigh Soap Goods' lower shipping costs. Soap Goods' jar looks less convenient for scooping, compared to Chemistry Store's pail. As for the product, I guess they're the same? Chemistry Store just says STPP, Soap Goods qualifies it with "light dense".