| Create(IQuantity, DerivedQuantityType) | Create a DerivedQuantity based on one of the baseQuantity where the derivation is defined by derivedType |
| Create(PredefinedQuantity, DerivedQuantityType) | Create a DerivedQuantity based on one of the basePreDefQuantity where the derivation is defined by derivedType |
| Create(eumItem, String, String) | Create a new Quantity. Not static for COM support. |