THE increasing use of counter-current distribution between solvents, in machines of the kind developed by Craig 1, for the purification of natural products prompts us to direct attention to simple ...

COUNTERCURRENT distribution has been successfully applied to the separation of proteins and similar large molecules in certain water–organic solvent systems 1 and in some two-phase water systems ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Lyman C. Craig (1906-1974) was a ...