Corning Thermowell GOLD 96-well PCR microplates are offered in four formats to ensure maximum flexibility and a perfect match for your applications. The original Thermowell 96-well PCR microplates are universal fit and can be cut into 3 x 8 well segments. Corning Thermowell GOLD 96-well PCR microplates are offered in four formats to ensure maximum flexibility and a perfect match for your applications. The original Thermowell 96-well PCR microplates are universal fit and can be cut into 3 x 8 well segments.