According to the national standard of the people's Republic of China, there is only one penetration test method for petroleum wax. Therefore, there is no deviation in the determination of penetration value. Penetration is the depth of the standard needle vertically entering the sample under the specified temperature, load and time, in units of 10-1 mm. For example, the number of penetrometer dials 85 represents the penetration depth of 8.5mm.

The penetration test requires professional instruments and equipment. The required samples are processed professionally and determined through repeated tests. The approximate method is as follows: heat the sample to at least 17 ℃ above its expected freezing point or melting point, pour it into the shaper, cool it in the air under controlled conditions, and then control the sample temperature in the water bath at the experimental temperature, Measure the penetration with a penetrometer, and pierce the standard of the penetrometer into the sample under 100g load for 5S.