| Field | Type | Required? | Description |
|---|---|---|---|
| FlowName | String | Y | Name of the substance in the inventory |
| FlowID | String | Y | A unique identification number used by the inventory to track the substance |
| CAS | String | N | Chemical Abstract Service ID Number |
| Compartment | String | N | Compartments of flow names |
| Unit | String | N | Unit of the flow |