Pycnometers are used for making density/volume measurements of solids using gas displacement.
The new Beckman Model 930 Air Comparison Pycnometer is a revolutionary means of making volume measurements for accurate, fast density determinations of irregular, powdered and porous solids. The Model 930 was marketed as early as 1961.
Rimozione a secco della polvere con panno morbido.
Beckman Model 930 Air Comparison Pycnometer, 1960–1969. Beckman Historical Collection, Box 55, Folder 174. Science History Institute. Philadelphia. digital.sciencehistory.org/works/vm40xr605
Beckman Instruments, Inc. (1961). Analytical Chemistry, 33(2): 154A-154A. doi: 10.1021/ac60170a885