SIBEL S.A.

SDI Diagnostics, Inc. is a US-based manufacturer and distributor of spirometry equipment and respiratory diagnostic consumables, founded in 1978. The company specializes in spirometer mouthpieces, filters, and accessories compatible with ndd EasyOne and EasyOn spirometer systems. Core product lines include Accurette filtered mouthpieces (FDA-approved, bacterial/viral filtered), Filtrette high-efficiency filters (99.9% protection, 99.999% cross-contamination efficiency), and AirTube calibration check accessories for ndd EasyOne Air spirometers. SDI manufactures most products at its New England facility in Massachusetts. All disposables are FDA-registered; filters meet ATS/ERS standards. The company serves pulmonary function testing (PFT) laboratories, clinical practices, and hospitals. SDI emphasizes customer service, technical support, and product quality assurance. Products are designed to maintain spirometer warranty compliance and enhance safety in respiratory testing.