The 24 position N-EVAP is our most adaptable evaporator. ?The basic model (cat# 11250) offers all of the standard features from our N-EVAP line. Additionally, the 24 position N-EVAP offers the most customizable options for your sample preparation needs. ?The standard sample holder can accommodate samples with an outside diameter of 10-30 mm. ?However, with the optional 8 position large sample holder, vials with an outside diameter of 30-75 mm can be processed. ?The 24 position N-EVAP can also be upgraded to include digital controls for heat and time with the addition of the side control box (cat# 11202). ?