Enumerations for _Sample.Solvent_system (An open enumeration)
`100% D2O` | enumeration_text
`50% H2O/50% D2O` | enumeration_text
`90% H2O/10% D2O` | enumeration_text
`93% H2O/7% D2O` | enumeration_text
`95% H2O/5% D2O` | enumeration_text
`acetone` | enumeration_text
`chloroform` | enumeration_text
`DMSO` | enumeration_text
`ethanol/water` | enumeration_text
`methanol` | enumeration_text
`trifluoroacetic acid` | enumeration_text
`trifluoroethanol/water` | enumeration_text