Note 1 to entry: Recommended use: as a laboratory primary, secondary and working reference, in particular when measurements of the performance of other photovoltaic devices under natural sunlight are performed.
Note 2 to entry: If the encapsulation system has been demonstrated to withstand long-term outdoor exposure, applying test levels according to IEC 61215, such reference cells may also be suitable to be used as a monitoring device for long-term assessment of operational photovoltaic arrays.