DENSITY AND RELATIVE DENSITY OF SOLID PITCH BY PYCNOMETER: ASTM D4892
With this test method, density is determined to decimal places that are sufficient for most applications. A more precise measurement can be obtained using Test Methods ASTM D71 or ASTM D2320. This test method is applicable at a range of room temperatures of 15 to 35° C.
TEST SUMMARY
Bulk samples suspected of having free moisture should be air-dried or oven dried at 50° C before analyzing. The sample is pulverized and screened to a given fraction. The volume of a weighed portion of the fraction is determined using a helium pycnometer.
TEST PRECISION
This test method has a repeatability of 0.02 and a reproducibility of 0.03. The density determined by this test method was higher than that determined by water pycnometer method, Test Method ASTM D2320 by an average of 0.004.
