QRS provides accessories to support all devices: ECGs, Holter/Event recorders, blood pressure monitors and spirometers. All consumables assist in the accurate and comprehensive diagnostic testing performed with QRS devices.

  • Pre-Calibrated Mouthpieces
  • Nose Clips
  • Pressure Tubes
  • Volume Calibration Syringe
Pre-Calibrated Mouthpieces Z-5000-2608

Box of 100


All QRS spirometers use pre-calibrated, disposable mouthpieces. These mouthpieces are individually calibrated during production using the same equipment LDS Hospital uses to validate spirometers against the American Thoracic Society's Recommendations for the Standardization of Spirometry.


These pneumotachs are single patient use only.

Nose-Clips 724050-00

Bag of 50


QRS, in line with ATS Guidelines, recommends the use of nose-clips when performing a Spirometry test with a QRS spirometer.




Pressure Tubes


Bag of 25


Pressure tubes connect the pre-calibrated mouthpieces to the QRS spirometers. They are re-usable, but need to be replaced if kinked or if condensation forms inside the tube.

Pressure tubes measure 48” long.



Volume Calibration Syringe 723000-00


QRS sells a three liter Volume Calibration Syringe designed to fit the QRS spirometers. Although QRS spirometers cannot be calibrated in the field, the syringe allows you to check your calibration. According to ATS Guidelines, the volume accuracy of the spirometer must be checked at least daily.


If calibration is off, please contact QRS for recalibration of your spirometer.


For more information about the spirometry accessories and their support of the American Thoracic Society Guidelines, download the Spirometry Consumables brochure.