447. stationary phase In chromatographic methods of analysis, typically a solid material (often modified silica or polymeric material) usually contained in a column, through which a mobile phase is moving. Separation of a mixture of analytes is achieved by differences in partitioning, adsorptive, electrostatic or affinity-type interactions between the mobile and stationary phases.
448. steady state The level of the drug in blood and tissue upon multiple dosing when input and output are at equilibrium during sequential dosing intervals.
449. stock solution Solution containing the analyte of interest at a relatively high known concentration that can be further diluted to prepare calibration standards biological fluids.
