Description Disposable Filters for SP-20 / SP-30 (#2.100123) Disposable Filter screens for Schiller Spirovit SP-20 Pneumotach Flowsensor & SP-30 Flow Sensor Spirometer. For Single Use. Includes 100 disposable filters. *Disposable cardboard Flow Sensor Mouthpieces are sold separately, refer to Part #2.100025 Click here for mouthpieces!
