The FlexCal Volumetric Flow Calibrator is Mesa Labs’ newest and latest volumetric flow calibrator offering easy-to-navigate calibration with unmatched flow range, accuracy and portability. FlexCal offers a flow range of up to 50 LPM with a standard accuracy of 0.5%, is small, easy to transport, and ready for even the most demanding applications.

When you use FlexCal from Mesa Labs, you are guaranteed high accuracy with high confidence without using soap pumps, timers, or heavy testers.

At Mesa Labs, we care about calibration, so you don’t have to. FlexCal is the most accurate and reliable flow calibrator on the market, ideal for flow verification applications in occupational health and the environment, giving you complete confidence in the results of your sampling device.

Product Details


  • Piston flow calibrator for volumetric flow verification in sampling devices with an accuracy of +/- 0.5%
  • Volumetric flow meters are available in the ranges of 5-500 cc/min, 50-5000 cc/min, and 0.5-50000 cc/min
  • Selectable units for flow (mL/min, L/min, cc/min, cf/min), temperature (°C, °F), and pressure (mmHg, PSI, kPa)
  • Actual volumetric flow and standard volumetric flow
  • Reading time between 1 – 15 seconds
  • Backlit LCD display
  • USB communication interface
  • Operates on rechargeable battery for between 6-8 hours of operation

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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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