StoreHamamatsu R1450 PMT Photomultiplier Tube 19mm for Scintillation CounterSKU: RH-P-PMT-R1450New 19mm diameter Hamamamtsu photomultiplier tube R1450, made in Japan. The R1450 is a 19mm (3/4 Inch) Diameter, 10-stage, Head-on type, Bia