For high temperatures and pressures, their effects can be measured by a captive drop method.
A common way to analyze these substances is Epton's two-phase titration method. For high temperatures and pressures, their effects can be measured by a captive drop method. By including diffusion, Morris et al. expanded on the model for these substances using pulsating bubble systems; that computational model of them is named for Otis. SP-A is the most common protein with this characteristic and is used in the immune system, and DPPC is the active part of another biological type. These substances have a radically lessened effect below the CMC. They are frequently made up of molecules with hydrophobic and hydrophilic components, which adsorb at the liquid-liquid interfaces. For 10 points, what are these substances that lower a solution's surface tension?
A common way to analyze these substances is Epton's two-phase titration method.
 surfactants [or micelles]