100 years SIEBTECHNIK TEMA, office with a desk on which a big golden 100 is standing, in front of it are models of some machines, a construction sketch and a laptop. The machines are a centrifuge, a screening machine and a test sieve shaker.

100 years mechanical engineering tailor made

1922 – 2022

closeup of electrical copper cables

Why a new kind of pycnometer?

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It’s time to rethink!

We would like to change your mind about gas pycnometers

Long waiting times, high error rate with untrained operation, the need for manual intervention, only usable in automated processes with high effort…Learn more about the BULKINSPECTOR and change your mind.

Key Features:

Why is it different from all other gas pycnometers on the market?

  • No manual intervention required during measurement, weighing and volume determination take place automatically inside the device.
  • Highly accurate, fast and reproducible measurement of sample density.
  • Use of various sample gases
  • Variable measuring cup volumes


  • Non-destructive testing
  • Temperature control for the device using Peltier elements
  • Easy operation via mobile control unit & touch screen
  • Data transfer to external systems possible
  • Online analysis with automatic sampling from the processes

Get more details

Interior view of the pycnometer. The robot arm automatically removes the selected measuring cup size from the holding device


For which applications is the BULKINSPECTOR particularly suitable?

  • Powder metallurgy: Measurement of sintered & cast densities to check for cavities.
  • PET coke: determination of porosity
  • 3D printing, additive manufacturing: Component characterization with determination of solids content
  • Pharmaceuticals: determination of tablet compaction and detection of pore inclusions
  • Cosmetics: detection of pore inclusions in lipsticks
  • Roll compaction, bulk material compaction
  • Determination of properties/characteristics: purity of products, chemical conversion by reaction, water content, coefficient of thermal expansion, and many more
  • Plastics/composites: Measuring the proportion of filler material
  • Construction industry: Measuring the density/porosity of materials
  • Geology: Measuring the porosity of drill cores

Find more applications

closeup of electrical copper cables
What are the issues with conventional gas pycnometers and what are the key features a next-gen pycnometer should have?

Why it’s time for a new kind of pycnometer

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industrial plant - interior with pipelines
Why is the BULKINSPECTOR the first choice in production plants?

Pyknometers in automated production processes

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