A kit comprising four lung bags, with holders (rubber bands) and mouthpieces designed for investigations into lung capacity. The bag is made of durable plastic and is silk screened with graduations up to six litres. Useful for comparing lung volume with he
A kit comprising four lung bags, with holders (rubber bands) and mouthpieces designed for investigations into lung capacity. The bag is made of durable plastic and is silk screened with graduations up to six litres. Useful for comparing lung volume with height, age etc.
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