Borax Technical Grade in a 3oz Bag is a industrial grade product. This is Borax Pentahydrate in the Granular form. It is also useful during casting, as a flux in Jewelry casting. NOTE: It is advised that ceramic crucibles be glazed with this Borax.
First time using this product to melt down some gold that I have had around the house for some years. Went online to You Tube and found many great ideas and this is where I found Borax as the best product for what I wanted. PJ