A microanalysis of colloid osmotic pressure.

A needle type of colloid osmometer has been devised with special attachments which made it useable with 3-μl samples. It has been used in oncometry of fresh water teleosts to give the following results: 5.1±1.0 mm Hg for goldfish, 5.2±0.71 mm Hg for carp, and 14.3±0.75 mm Hg for eel.