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West Berlin, New Jersey-08091, United States+(1)-856-7671000
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Gurley Automatic Densometer & Smoothness Tester

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the model 4340 automaticdensometer & smoothness tester measuresthe porosity, air-permeability or airresistance of sheet-like materials. Itcombines the abilities of a low, standardand high pressure tester with a digitaltimer that provides a reading in seconds.

an auto-drive mechanism, enables youto program the number of tests as wellas the span they are tested over. Therefore, a sheet or strip of paper can beanalyzed automatically.


  • porosity and smoothness of paper, textiles,paperboard, films, membranes, filtermedia, packaging, perforated metals andothers.
  • quality control — air permeability can bea direct representation of the uniformity ofmaterial.
  • analyze effects of treatments such ascoatings, sizing agents, inks, resins orother additives.

choice of outputs

  • porosity:
    • standard gurley
    • low pressure gurley
    • high pressure gurley
    • sheffield units
    • bendtsen units
  • smoothness:
    • standard gurley smoothness
    • sheffield units
    • bendtsen units
    • bekk units


  • porosity & smoothness tests
  • automatic & manual test modes
  • output in seconds - improves efficiency
  • programmable auto-drive mechanism
  • interchangeable orifices (1. 0 sq. In. Standard, 0. 25 & 0. 1 sq. In. Optional)
  • rs-232 computer output


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