The ratio is conservatively 2:1.
The amount of an oil spill in kg/tonnes must be known to get an idea of how much OilStic™ to use. In order to find out the kg/tonnage calculate the surface area, find out the thickness of the spill and multiply those numbers together to give you the volume. To get kg/tonnage multiply volume by the mass of oil.
Surface Area = 4m x 2m x 0.15m (thickness) = 1.2m3
Mass of Crude Oil = 790 kg/cu. m (790/1000 = 0.790 T)
Total = 948 kg or .948 T
Therefore to clean up 948 kg of oil, 474 kg of OilStic™ is needed