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PubMed · 9241694

Respirometer for small samples with automatic registration.

F Floto
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Abstract

The respiration chamber containing the sample is a small glass test tube with a closure of KOH solution. During registration the gas volume is kept constant by adjusting the pressure through a feedback mechanism: a microscope projects the picture of the meniscus of KOH onto a photodiode connected to a pen recorder with a vertically moving pen. A levelling bulb with water mounted on the pen transmits the pressure adjustments to the KOH solution through a water filled tubing. The accuracy is +/-0.1 mm water column (1 Pa) and the minimum air volume is 10 nl, so that an oxygen consumption down to 1 pl can be seen.

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BibTeXRIS

F Floto. 1997. Respirometer for small samples with automatic registration.. https://doi.org/10.1016/s0034-5687(97)00031-5

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