~0.14 at 0.10 Osm: ~0.76 at 1.02 OSM M
||Bacteria Escherichia coli
||Cayley S, Lewis BA, Guttman HJ, Record MT Jr. Characterization of the cytoplasm of Escherichia coli K-12 as a function of external osmolarity. Implications for protein-DNA interactions in vivo. J Mol Biol. 1991 Nov 20 222(2):281-300 p.281 2nd paragraph and p.283 left column top paragraphPubMed ID1960728
||"Analysis of these osmotic coefficients using polyelectrolyte
theory indicates that the thermodynamic activity of cytoplasmic K+ increases from
approximately 0.14 M in cells grown at an external osmolarity of 0.10 OSM
to approximately 0.76 M at 1.02 OSM."