Finest available. Not a preservative, rather is a binder, blender, stabilizer, and antifreeze when mixed with glands. It is mixed with urines to add body, to prevent evaporation when exposed to the air, and to prevent freezing.
Top grade. Similar uses as Glycerine Oil, but a bit cheaper. Used for anti-freeze in urines, and as tincturing ingredient. When used to spray on the dirt as an antifreeze – mix 1 part glycol to 3 parts water and apply in several layers at the set.