Stability of Heavy Oil ASTM 7061
MS 20 from DataPhysics is a measuring device for automatic optical stability of liquid suspensions. The
stability and compatibility of heavy oil can be evaluated based on the transmittance change of light
when adding n-heptane. According to ASTM D7061 the separability number can be calculated. A value
between 0 and 5, the oil is very stable and has less risk for flocculation.