High quality spirometry starts with the right mouthpiece

When it comes to delivering high-quality lung function testing, it’s not just about having a premium, easy-to-use device, it’s also about using the right accessories. Accurate, hygienic, and consistent lung function results rely on the seamless integration of both.
That’s why ndd offers two options: the ndd Spirette and the ndd EasyOne FlowTube. Designed for comfort, precision, and hygiene, both mouthpieces ensure reliable results and help protect patients from cross-contamination.
In this blog, we’ll explore the unique benefits of the ndd mouthpieces and what sets them apart.
High-quality precision #
Proudly manufactured in both Switzerland and the United States, the ndd Spirette and ndd EasyOne FlowTube mouthpieces reflect a commitment to uncompromising quality. This dual production approach ensures that every mouthpiece upholds the highest standards of precision and reliability, making them a trusted choice for accurate spirometry worldwide.
Every detail—from the material selection to the final form—is carefully considered to deliver consistent, high-quality performance across every test, in various environments.
Engineered for accuracy with TrueFlow technology #
Far more than a simple accessory, the ndd Spirette and ndd EasyOne FlowTube are integral components of the measurement process, playing a crucial role in ensuring the accuracy of every lung function test. Used in conjunction with ndd’s patented TrueFlow technology, these mouthpieces enable calibration-free spirometry and help guarantee reliable, reproducible results.
Its internal design ensures unobstructed airflow, allowing for highly accurate, repeatable lung function measurements. Ideal for general practice or high-volume environments, they simplify workflow while maintaining diagnostic integrity.
Hygiene without compromise #
Both the ndd Spirette and ndd EasyOne FlowTube are disposable, removing the need for cleaning or sterilization between patients. This significantly reduces the risk of cross-contamination, making them an excellent solution for infection control—particularly in environments where patient turnover is high or strict hygiene protocols are in place.
Comfortable, convenient, compliant #
Whether you’re using the ndd Spirette or ndd EasyOne FlowTube, both mouthpieces are designed to be easy to handle, comfortable for patients, and fully compatible with ndd EasyOne spirometry systems. Because they require no calibration and have a long shelf-life, these mouthpieces make inventory management easier while ensuring adherence to the highest safety standards.
Why the ndd EasyOne mouthpiece #
High-quality spirometry starts with components you can trust. With the ndd Spirette and ndd EasyOne FlowTube—manufactured to the highest standards in Switzerland and the United States—you get more than just mouthpieces: you get confidence in your test, protection for your patient, and precision in your results.
The right mouthpiece makes the difference. ndd delivers precision and comfort in every test.
Ready to see the difference?