ADVANTAGES:

• The inorganic salt sodium polytungstate results in an aqueous, neutral solution.

• SPT is a Non-Toxic high density agent.

• Has a low viscosity at high concentration.

• Easily adjustable densities from 1.0 g/ml to 4.2 g/ml

• Is ecology safe and simple to handle. Can be discarded easily.

• Has No obnoxious smell, no corrosive properties, not flammable.

• Stable in the pH-range of 2-14.

• Laboratory centrifuges can be used.

• Excellent recovery, substantially no losses and thus SPT is less expensive than TBE.