Task: Text Categorization
Input (English): Excluding sample preparation, two of these processes make up the first two phases of MudPit protein\n analysis. This process can be described with an equation that contains terms for eddy-dffusion, longitudinal\n diffusion and mass transfer called the van Deemter equation. A common material used in these setups is\n sepharose. It uses antibodies or other binding molecules in its affinity variant and a charged resin in its ion\n exchange form. The retention time is used to characterize this technique, which typically makes use of a\n column in its gas, liquid or high performance liquid variants. For 10 points, name this chemical technique\n which involves passing a mobile phase through a stationary phase to separate a mixture.
Output (English): Science