| Name | Type | Require | Description |
| Title | String | true | |
| Analyte Date | Date | true | |
| Experimenter | String | true | |
| Internal Length (mm) | Double | true | Batch number of lc_column |
| Internal Diameter (mm) | Double | true | Batch number of lc_column |
| Temperature (centigrade) | Double | true | Temperature of the apparatus |
| Injection Volume (ul) | Double | true | Batch number of lc_column |
| Description | String | true | Free text description of the lc_column |
| Manufacturer | String | true | Manufacturer's details |
| Part Number | String | true | Part number of lc_column |
| Lot Number | String | true | Batch number of lc_column |
| Stationary Phase | String | true | Details of solid material in lc_column |
| Particle Size (um) | Double | false | Size of beads in solid phase |
| Pore Size (angstrom) | Double | false | Size of pores in those beads |
| Flow Rate (ul/min) | Double | false | Rate of flow of mobile phase |
| Parameters File | String | false | Batch number of lc_column |
| Fraction | Fraction[] | false | Part or all of the run-off from a lc_column |
| Mobile Phase Component | MobilePhaseComponent[] | false | Description of a component of the mobile phase |
| Gradient Step | GradientStep[] | false | Single step in a series over an LC run |
| Column | Column | false | Description of an HPLC or NanoLC lc_column |
| Assay Data Point | AssayDataPoint[] | false | Single data point from a UV protein assay |