Why the EasyOne spirometers are a smart long-term investment for your practice
EasyOne spirometers are designed to provide long-term value for healthcare practices through reliable performance, durability, minimal maintenance, and efficient clinical workflows. ndd’s patented TrueFlow ultrasound technology provides accurate, calibration-free spirometry with no moving parts, helping reduce routine maintenance requirements and support a lower total cost of ownership. Backed by clinical research and years of use in large-scale studies, EasyOne spirometers offer practices a dependable solution for high-quality lung function testing. Read on to learn how EasyOne’s proven accuracy, reliable technology, and low maintenance requirements can make it a smart long-term investment for your practice.
Investing in diagnostic spirometry equipment is about more than upfront cost; it’s about long-term value, reliability, and performance. When practices take the time to consider clinical evidence on spirometer accuracy, the benefits of ndd’s patented TrueFlow ultrasound technology, and factors such as long-term costs and ROI, they can make a smart investment.
Built to last #
EasyOne devices are built to last with a durable design engineered for years of routine clinical use. The ndd spirometers reduce maintenance needs while also delivering reliable, accurate performance.
Several studies demonstrate EasyOne’s accuracy. When 17 spirometers were tested for accuracy and precision in a 2016 study of spirometry in primary care offices, the EasyOne came out on top.1 No other device met ATS accuracy criteria.
The World Trade Center Worker and Volunteer Medical Screening Program also documented the EasyOne’s accuracy.2 Over four years and more than 5,000 calibration checks, 98% of exhalation volume results and 97% of inhalation volume results fell within a three percent margin.3
Across the globe, clinicians and researchers rely on ndd EasyOne devices to deliver accurate, dependable results when it matters most.
Explore the spirometry research
In addition to the study of lung function in WTC rescue workers,4 EasyOne spirometers have also been used in other important clinical research studies, including COPDGene, a large-scale study examining the relationship between COPD and genetics, the Multicenter AIDS Cohort Study (MACS), which examines pulmonary function changes as they relate to HIV, and the Canadian Longitudinal Study of Aging (CLSA), which follows more than 51,000 participants across Canada over 20 year.5
Technology you can rely on #
TrueFlow technology uses ultrasound signals and high-quality components to deliver a calibration-free spirometry experience while avoiding the challenges of analog flow measurement equipment.6 This patented design also makes it stand out among other ultrasound spirometry technology, as it’s the only one with proven accuracy over the product’s lifetime. 5
In addition to a calibration-free experience, TrueFlow technology offers many other benefits. Even at low flows, the ultrasonic flow sensor technology delivers accurate performance.7With no moving or obstructing parts in the flow path, TrueFlow technology minimizes resistance during inhalation and exhalation. The technology is also durable and offers high repeatability.7 The TrueFlow sensor is hygienic because it does not come into direct contact with the patient’s breath.7 Cross-contamination risk is also minimal thanks to wipeable surfaces, no fragile parts requiring cleaning, and single-use elements.7 The simplified design eliminates the need for code entry or calibration and uses no moving parts, making workflows easier and more efficient.7
Lower total cost of ownership #
Taking the long view when considering spirometry equipment can pay off. A higher initial investment may feel like a deterrent, but it can translate to lower long-term operating costs. Choosing a spirometry option with minimal maintenance and service requirements reduces ongoing support needs. Equipment with proven, reliable performance can also help maximize return on investment.
EasyOne spirometers are designed to help keep those ongoing demands to a minimum. TrueFlow ultrasound technology requires no calibration and uses no moving parts, helping simplify routine operation and reduce maintenance requirements.
For busy practices, that simplicity has value beyond equipment costs. Less time spent maintaining, troubleshooting, and managing a spirometer means staff can spend more time focused on testing and patient care. Combined with durable construction and reliable long-term performance, EasyOne spirometers provide a solution designed to deliver value well beyond the initial purchase.
Think beyond the purchase price Consider maintenance, calibration, staff time, consumables, and long-term reliability when evaluating your next spirometer.
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Supporting busy healthcare professionals #
Clinicians benefit from the consistent accuracy of EasyOne spirometers, which gives them confidence in every test. Dr. Marcelo Rabahi, Doctor of Medicine and Professor at Federal University of Goiás, says, “I have confidence with my exams. I can trust the results, and this helps me care better for my patients.”[^9]
Reliable performance also means clinicians can stay focused on what matters most, the patient. Minimal maintenance and dependable operation reduce distractions, helping healthcare professionals spend more time delivering care and less time thinking about their equipment. Dr. Antonio Barros, Board-certified pulmonologist and Internal Medicine Specialist, says, “The reliability and ease of use make ndd EasyOne spirometers indispensable. We can obtain high-quality data efficiently, which improves our diagnostic precision and enhances patient monitoring.”[^9]
Conclusion #
The EasyOne product line provides lasting value through durability, proven reliability, and minimal maintenance. Its patented TrueFlow ultrasound technology combines superior quality with ease of use. EasyOne spirometers are designed to deliver consistent performance over time. By reducing operational disruptions and lowering the total cost of ownership, they help clinicians stay focused on delivering high-quality patient care and are a smart long-term investment for your practice.
Hegewald MJ, Gallo HM, Wilson EL. Accuracy and quality of spirometry in primary care offices. Annals of the American Thoracic Society. 2016 Dec;13(12):2119-24. doi: https://doi.org/10.1513/AnnalsATS.201605-418OC ↩︎
ndd Medical Technologies. TrueFlow Technology – Where’s the proof? [Internet]. [Cited 2026 Aug 17]. Available from: https://nddmed.com/trueflow-technology-wheres-the-proof/ ↩︎
Skloot GS, Edwards NT, Enright PL. Four-year calibration stability of the EasyOne portable spirometer. Respir Care. 2010;55(7):873-877. Available from: https://pubmed.ncbi.nlm.nih.gov/20587099/ ↩︎
Aldrich TK, Gustave J, Hall CB, Cohen HW, Webber MP, Zeig-Owens R, Cosenza K, Christodoulou V, Glass L, Al-Othman F, Weiden MD. Lung function in rescue workers at the World Trade Center after 7 years. New England Journal of Medicine. 2010 Apr 8;362(14):1263-72. doi: https://doi.org/10.1056/NEJMoa0910087 ↩︎
ndd Medical Technologies. Clinical Research [Internet]. [Cited 2026 Aug 20]. Available from: https://nddmed.com/clinical-research/ ↩︎ ↩︎
ndd Medical Technologies. PFT sensor and calibration technology [Internet]. [Cited 2026 Aug 20]. Available from: https://nddmed.com/ndd-pft-technology/ ↩︎
ndd Medical Technologies. TrueFlow Technology – Operational benefits [Internet]. [Cited 2026 Aug 17]. Available from: https://nddmed.com/trueflow-technology-benefits/ ↩︎ ↩︎ ↩︎ ↩︎ ↩︎
Written by
Kelly Sicard
MA
Kelly M. Sicard is a freelance writer with an M.A. in English & Creative Writing, known for transforming complex subjects into clear, practical, and engaging content. With two decades of experience working in nonprofit and educational settings, she brings a strong foundation in communicating scientific, medical, and research-based information to diverse audiences through a human-centered approach.
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