SPD-5 and SPD-6 FC series explained “F.C. – Fraction Collector”
SPD-5 FC34 = SPD-2 Thermal+ with fraction collector
SPD-6 FC45 = SPD-3 Thermal+ with fraction collector
the FC stands for fraction collector. obviously right? summit brings to market the hybrid transformation of the features we find in the SPD-4 MPD with its genuine and unique build out that includes a upper vapor section fraction collector. the original work of Summit to bring you the FC series heads built ontop of the Thermal+ models. are you super happy with the way your spd-2 and spd-3 heads perform, well here is the new generation with faster speeds and more accurate vapor flow, paired with the new LAMINAR PATH adapters for the trap these heads specifically can increase speeds when used with a #34 modified trap for vaccum accumulation.