Centrifugal Ultra-filtration


IN the course of preparing ultra-filtrates from blood and plasma for the purpose of estimating amino-acids, we have found that serious losses can occasionally occur when collodion sacs are used. Individual amino-acid concentrations in the ultra-filtrates from control aqueous solutions containing no protein may often be reduced by 50 per cent or more. The amino-acids investigated were arginine, histidine, tryptophane and ergothioneine.

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    Appendix to “Colloid Science” (Oxford Univ. Press, 1949).

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LATNER, A., SLACK, E. Centrifugal Ultra-filtration. Nature 165, 530–531 (1950). https://doi.org/10.1038/165530b0

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