dehydration the results in mexico were obtained and certified by intertek testing services de mexico s a de c v two methods were used for testing in croatia a sem scanning electron microscope which is a microscopic observation of the surface of the crude oil and b dsc differential scanning calorimetry a thermal method that determines the specific heat of the crude oil two methods were used for testing of ratification in mexico a kinematic viscosity and b water in crude oil by potentiometric titration of karl fischer tables iv to ix show the results of initial testing performed on samples to show their inherent properties for the purpose of sem testing a microscope jeol 5800 was used equipped with corresponding detectors one of the important conditions for this sem test is that the sample needs to be stable in high vacuum to ensure stability a drop of crude oil was disposed on a glass smeared to get as thin and homogeneous smear as possible the smear was dried and gold plated to ensure good electrical transmittance and therefore a better image cavities or holes were spotted smaller and bigger for the crude oil samples that had passed through the ionizer polarizer core the number of those cavities or holes was significantly greater particles 39 sizes were between 10 30 m particles were not usually spotted with crude oil treated with the ionizer polarizer core but only the cavities of different size and shapes this testing was conducted with perkin elmer dsc 7 calorimeter testing was done within the temperature range of 30 u00b0 c to 150 u00b0 c recording speed of 10 u00b0 c min in oxygen current small amounts of sample weighing a few milligrams were measured in conclusion the.