Disposable Bacterial Filter, disposable microbacterial filter significantly reduces need to sterilize your spirometers flow head, 30 mm ID opening allows for an easy, air-tight fit to the flow head
Salt Bridge, inverted U tube with its ends closed by sintered discs. Length (in)7.5 x Width (in)5.5 x Height (in)1.2, provides a more effective method of making reversible cells then wet filter paper/agar gel methods. Diameter of arms 13 mm, overall width 80 mm, overall height 100 mm