The SDI Diagnostics Spirotubes (Type B Individual Box Configuration) are premium, single-use cardboard mouthpieces designed for standard pulmonary function testing and spirometry screenings. Engineered with a distinct mechanical profile featuring a 26 mm inner diameter and a 28 mm outer diameter, these specialized tubes provide an airtight friction-fit seal over matching pediatric or universal spirometer flow heads. Fabricated with precision-cut, perfectly smooth ends, they optimize patient lip comfort and prevent mucosal irritation during intense forced expiratory maneuvers. The rugged composite paper walls possess an optimized structural thickness that actively resists moisture absorption, bending, or collapsing under firm teeth clenching, ensuring an unrestricted airway for flawless flow and volume measurements. This specific product code designates the standalone clinic packaging configuration, supplying a single dispenser box containing 200 individual disposable spirotubes.
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