CITREX H4 portable Ventilator Tester


The most precise gas flow and pressure test instrument for mobile use.

The test tool of choice for healthcare quality and safety professionals.

CITREX H4 is designed for easy mobile use while still meeting all the requirements of day-to-day field operations. Its capabilities allows it to analyze the performance of a wide variety of medical devices. Examples of gas flow or pressure producing devices are respiratory ventilators, endoscopic insufflators, anesthetic machines, oxygen flow meters, pressure gauges and suction devices.

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CITREX H4
CITREX test set

Biomedical test set CITREX H4


The CITREX mobile test set is a certified, high precision measuring system with an extensive array of accessories.


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EasyCal Calibration Service


The convenient, simple calibration service for the annual calibration of your CITREX H4.



EasyCal offers swift maintenance and calibration of your pressure and flow measuring device from IMT Analytics. Alongside checking and calibrating your CITREX H4, the firmware will also be updated.

You can determine the pick-up time for your device on our online platform and automatically generate shipment and customs papers.

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CITREX H4

Bidirectional flow measurement


Our measuring method allows extremely precise, bidirectional flow, volume and pressure measurement with low flow resistance.

Respiratory parameters in real-time graphs


Up to 25 relevant respiratory parameters based on volume, flow and pressure are continuously measured and calculated and can be easily displayed on the color screen in real-time.

CITREX H4
CITREX H4

Gas standards and gas types


Capable of measuring up to eight gas types or mixtures such as air, air/O2 , N2O/O2, CO2, etc., and seventeen supported gas standards enable testing on a nearly limitless range of medical devices.

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Oxygen measurement


Fast and precise measurement of oxygen concentration is an important function when verifying and calibrating ventilators or other medical devices. The CITREX H4 test set includes the O2 option, which allows accurate oxygen measurements.

CITREX H4
CITREX H4

CITREX Profiles


CITREX Profiles capabilities allow you to easily create customized setup profiles for any of your ventilators or other applications.

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CITREX Webserver


CITREX Webserver is the easiest way to analyze and create reports from CITREX measurements. The software offers real-time curves, trending, cursors and reporting capabilities viewable on your browser and exportable in Excel format.

CITREX H4

FlowLab, a powerful software tool


Software package for real-time curves, 100h trending and customized reporting. Fast data acquisition via USB port.


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flowlab software

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in ventilator testing

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Benefit from the advantages of the CITREX H4 every day!

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