This standard specifies the method for microscopic observation of wax precipitation points in waxy crude oil using a polarizing microscope equipped with a microscopic observation hot stage (hereinafter referred to as the hot stage) and an image monitoring system.
SY/T 0521-2008 history
2008SY/T 0521-2008 Determination of wax appearance temperature in crude petroleum.Test method by microscopic observation
1993SY/T 0521-1993 Microscopic Observation Method for Determination of Wax Precipitation Point of Crude Oil