It is a propriety non-chromic tannin based product. It is used as thinner in different kinds of water based muds and special fluids.
It is water solution of low molecular weight acrylic copolymers. It is an effective viscosity reducer in water based polymer muds, prepared on fresh water as well as on salt water.
It is a lignosulphonate. It is a brown powder used as thinner in different kinds of water based drilling muds.