Primary Gas Flow Calibrators

Primary Gas Flow Calibrators

Metrology Series Dry Cal 800

The Met Lab Series of high-precision primary flow standards offers exceptionally low uncertainties to meet the most stringent laboratory and industrial process control requirements.

The Met Lab 800 Series combines our Proven Bios DryCal Technology with interchangeable flow cells to achieve precise, primary measurements over an incredibly broad flow range; from 0.5 sccm up to 100 slpm.

Our latest flow cell, the ML 800, offers an extended gas flow measurement range of 1-100 lpm with a standardized flow accuracy of 0.15%. This expanded flow cell offers a piston prover with a high purity graphite piston (75mm). The ML-800 offers gas measurement technology that is largely independent of gas species.

The 800 series consists of 5 interchangeable flow cell models, the table below details each model and its specific attributes:


  • 0.5 sccm – 100 slpm Flow Range
  • 0.25% Measurement Uncertainty (0.5 – 50 sccm)
  • 0.15% Measurement Uncertainty (5 – 100,000 sccm)
  • 5 Interchangeable Flow Cells
  • 100:1 Turndown Ratio

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