ASTM D4892-14(2019) Standard Test Method for Density of Solid Pitch (Helium Pycnometer Method)
This test method is useful in characterizing pitches as one element in establishing uniformity of shipments and sources of supply. With this method, the density is determined to two decimal places, which is sufficient for most applications.
Significance and Use
This test method is useful in characterizing pitches as one element in establishing uniformity of shipments and sources of supply. With this method, the density is determined to two decimal places, which is sufficient for most applications. If a more precise measurement is required (three decimal places), use Test Methods D2320 or D71.
Scope
This test method covers the determination of pitch density by helium pycnometer. It is applicable at a range of room temperatures of 15 °C to 35 °C.
Summary of Test Method
The sample is pulverized and screened to a given fraction, then the volume of a weighed portion of the fraction is determined using a helium pycnometer
Apparatus
1 Helium Pycnometer.
2 Balance, capable of weighing a 150-g specimen to within 1 mg.
3 Sieves, U.S. Standard 2.36-mm (No. 8), 600-μm (No. 30), conforming to Specification E11.
4 Thermometer, for measuring room temperature.
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