TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: In Copyright - Rights-holder(s) Unlocatable or Unidentifiable TI - Beckman Model 930 Air Comparison Pycnometer ID - vm40xr605 DA - 1960/// YR - 1960 AV - Beckman Historical Collection, Box 55, Folder 174 VL - Beckman Historical Collection, Box 55, Folder 174 AN - Beckman Historical Collection, Box 55, Folder 174 UR - https://digital.sciencehistory.org/works/vm40xr605 AB - Pycnometers are used for making density/volume measurements of solids using gas displacement. The Model 930 was marketed as early as 1961. KW - Pycnometer KW - Scientific apparatus and instruments KW - Beckman Instruments, Inc. LA - ER -