{
    "id": "INV.19",
    "type": "Field",
    "position": "INV.19",
    "name": "On Board Stability Time",
    "length": 20,
    "usage": "O",
    "rpt": "1",
    "dataType": "CQ",
    "dataTypeName": "Composite Quantity with Units",
    "tableId": null,
    "tableName": null,
    "description": "This field is the duration of time that the calibration / usability of the substance is stable. The duration is used to calculate the date / time when this calibration is no longer valid by adding this \"On board stability time\" (INV-19) to the \"First used date / time\" (INV-13).",
    "sample": "",
    "fields": [
        {
            "id": "INV.19.1",
            "type": "Component",
            "position": "INV.19.1",
            "length": 16,
            "dataType": "NM",
            "dataTypeName": "Numeric",
            "usage": "O",
            "rpt": "1",
            "tableId": null,
            "tableName": null,
            "name": "Quantity",
            "description": "This component specifies the numeric quantity or amount of an entity."
        },
        {
            "id": "INV.19.2",
            "type": "Component",
            "position": "INV.19.2",
            "length": 483,
            "dataType": "CE",
            "dataTypeName": "Coded Element",
            "usage": "O",
            "rpt": "1",
            "tableId": null,
            "tableName": null,
            "name": "Units",
            "description": "This component species the units in which the quantity is expressed. Field-by-field, default units may be defined within the specifications. When the quantity is measured in the default units, the units need not be transmitted. If the quantity is recorded in units different from the default, the units must be transmitted."
        }
    ]
}