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Respiration apparatus Class Set of 15 is backordered and will ship as soon as it is back in stock.
For inhaled and exhaled air test. Comprises two boiling tube each with stopper and two lengths, one short and one long of 5 mm glass tubing, connected by PVC tubing and plastic T.
We're expanding Bunsen to allow comparison of non-science products, too! Preview the new site here (beta)
