Manufactured in borosilicate glass with white enamel markings.
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Used for demonstrating respiration of germinating seeds such as peas or beans, or small animals like woodlice. The tube is filled with KOH solution which absorbs the carbon dioxide produced. The graduations show the percentage of the air that has been used – the oxygen content of the atmosphere.
We are open for business and are continuing to supply essential glassware to our laboratory and pharmacy customers in this difficult period. We have introduced social distancing and protective methods to look after our staff in accordance with government guidelines. We will keep this website updated as changes occur. Thank you to all our customers and suppliers for your support.
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