Kit, The state of Earths atmosphere affects us all, which explains why the weather is one of the most popular topics of conversation and scientific study. With 23 hands-on experiments, Full-color, 48-page manual.
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
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