Abstract
Lees and Quastel1 described an apparatus for the perfusion of soil samples which obviated the need for disturbing the soil during the experiment. Their design was later modified by Audus2, who used a negative pressure for circulating the perfusate. This apparatus was rather fragile and required a consider able amount of incubator space. A modified design, using the same principle as the Audus apparatus, has been used here successfully for twelve months and the alterations did not apparently affect the efficiency of the perfuser compared with the earlier models.
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References
Lees, H., and Quastel, J. H., Biochem. J., 40, 803 (1946).
Audus, L. S., Nature, 158, 419 (1946).
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COLLINS, F., SIMS, C. A Compact Soil Perfusion Apparatus. Nature 178, 1073–1074 (1956). https://doi.org/10.1038/1781073b0
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DOI: https://doi.org/10.1038/1781073b0
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