Dolapix PC67 is a deflocculant. It makes glazes (and clay) more fluid without adding water. This is a very important product for adjusting the viscosity of glazes without changing the specific gravity. The product is very strong. You often need only a few drops on a small amount of glaze to make it fluid. 

More information can be found in the instruction booklet that comes with each SOGO glaze.
 
500ml