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NDD Easy-On

£1,245.00 ex. VAT

The Easy-On is a powerful PC-based ultrasonic diagnostic Spirometer with the option of EMIS and SystmOne integration available. It uses the NDD TrueFlow technology for incredibly accurate and reliable results.

The Easy On spirometer is a lightweight machine that connects directly into a PC or laptop for real-time spirometry diagnostics. The Easy on spirometer comes complete with diagnostic spirometry software.

The handheld sensor utilises the ndd TrueFlow technology to measure the flow of air in and out of the patients’ lungs. Guaranteed for life, this technology eliminates problems associated with traditional methods of flow measurement and helps make the ndd products extraordinarily fast, reliable, accurate and error free. There are no moving parts, no codes to enter and no screens to catch sputum. The ultrasonic flow measurement is independent of gas composition, pressure, temperature, and humidity thus eliminating errors due to these variables.

The software is free of any licencing with any updates provided free of charge for life. This means the device can be used across multiple PC’s with the software installed. The software can be fully integrated into patient record systems such as EMIS and SystmOne*.


KEY FEATURES of the Easy On Spirometer

  • PC guided spirometry using ultrasonic technology

More accurate and reliable than conventional spirometers and is not effected by humidity or other variables

  • Extremely high accuracy for low flows

Unlike turbine based spirometers, there is no resistance

  • Feature rich software for comprehensive spirometry testing

Includes PRE/POST measurements, lung age, trending as well as selectable interpretation mode and auto QC.

  • Child incentive option

Improve patient compliance when testing with children

  • Licence-free software

Can be installed on multiple PC’s

  • Fully integrates into EMIS and SystmOne*


  • TrueFlow USB handheld sensor
  • 2 x Spirette ‘M’
  • 4 x One way valve adult mouthpieces
  • 1 x Mouthpiece adaptor (to connect mouthpiece to spirette ‘M’)
  • Easy on-PC software on USB key
  • Protective carry case


  • Life-time manufacturer’s warranty



Device category Diagnostic spirometer
Spirometry parameters ATI, BEV, CVI, E50/150, EOTV, ERV, FEF10, FEF25, FEF2575, FEF2575_6, FEF40, FEF50, FEF50/FVC, FEF50/VCmax, FEF60, FEF75, FEF75-85, FEF80, FET, FET25-75, FEV.25, FEV.5, FEV.5/FVC, FEV.75, FEV.75/FEV6, FEV.75/FVC, FEV.75/VCmax, FEV1, FEV1/FEV6, FEV1/FVC, FEV1/FVC6, FEV1/VCmax, FEV1/VCext, FEV3/FVC, FEV3/VCmax, FEV3, FEV6, FVC, FVC6, IC, IRV, MEF20, MEF25, MEF40, MEF50, MEF60, MEF75, MEF90, MMEF, MTC1, MTC2, MTC3, MTCR, MVV, MVV6, MVVtime, Rf, PEF, PEFT, t0, VC, VCext, VCex, VCin, VCmax, VT
Flow measuring range ± 16 l/s
Flow resolution 4 ml/s
Volume measuring range ± 12 l
Volume accuracy ± 2% or 0.050 l
Flow accuracy ± 2% or 0.020 l/s
PEF accuracy ± 5% or 5 l/min
MVV accuracy ± 2% or 0.050 l
Resistance ~ 0.3 cm H2O/l/s
Sample rate 400 Hz
Data transmission USB
Software requirements Hard disk: Installation/ system 1 GB Data up to 4 GB   RAM: 2gb
Operating system Windows 7 SP1, Windows 8 and 8.1(32 and 64 bit), Windows 10 (32 and 64 Bit), Windows 11
Operating conditions (Sensor) Temp: 0 – 40 °C/32 – 104 °F   Rel. Humidity: 5 – 95 %   Atmosph. Pressure: 500 – 1060 hPA
Dimensions 160 x 30 x 70 mm
Weight 155 g

*Additional charges apply. Please contact us for further details.

This product is supplied with a 12 month calibration certificate.

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