Sodium polytungstate (SPT) is perfect for preparation of heavy liquids. This product offers an environmentally friendly alternative to using zinc chloride and mercury saline solutions or highly toxic halogenated hydrocarbons to conduct the sink or swim analyses required for density determination.

Properties:
Highly water soluble
pH-neutral solution
Maximum achievable density of the solution is 3,1 g/cm³ at 25 °C

Advantages:
Non-toxic
Non-flammable
Odourless
Low viscosity
Easy to use
Extremely easy to clean the sinks and floats with water
Environmentally friendly