DeltaCal® BGI is an easy-to-use, NIST-traceable standard for volumetric airflow, barometric pressure, and ambient temperature. DeltaCal is a Venturi-based system with built-in compensation for changes in ambient temperature and pressure.

All deltaCal systems are built and tested in the NIST Tracked Calibration Laboratory and ISO 17025 certified facility. To begin calibration, simply replace the sampler inlet head on any US EPA designated PM10 and PM2.5 sampler with a deltaCal sampling head.

Additionally, deltaCal can be used with other samplers in the 1.5 to 19.5 LPM range via an adapter. Additionally, it allows connection of a temperature sensor to verify conditions within the sampler filter support, in accordance with US EPA guidelines for PM2.5 measurements.
Mesa Labs

Product Details


  • Primary flow calibrator in the range of 2 to 19.5 LPM (Other optional flows)
  • Ideal for verification of environmental instruments via the Venturi principle, complying with US EPA recommendations.
  • Accuracy traceable to NIST and ISO 17025 of +/- 1%
  • Flow pressure and temperature sensors
  • LCD display for visualization of flow and other parameters.
  • Software for data download and report generation
  • Operates on 4 x AA alkaline batteries for up to 20 hours of operation.
  • Estimated weight 1 kilogram

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Frequently Asked Questions

Can we find the PT HAS product on the e-catalogue (LKPP) ?

Absolutely, almost all PT HAS products can be found in the e-catalogue.

How about the warranty for products from PT HAS ?

PT HAS Supply’s products include a 1-year official warranty for damage caused by manufactured defects.

Has the PT HAS product been calibrated? What if the calibration period is over?

Products from PT HAS have been calibrated and are ready to use. For further calibration, PT HAS already has a calibration lab that is ISO 17025 accredited and is ready to help customers who need recalibration.

What if the product has a problem and needs repair?

PT HAS has a local service center (in Jakarta), and our technicians are trained in the manufacture of the products we are agents for. For repairs and troubleshooting, we try to do it locally. and we make sure that the spare parts we supply are official spare parts from manufacturers.

Do we get training on using the tool after making a purchase at PT Has?

For all product purchases at PT HAS, usage training is included and is unlimited.

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