PHOTOMULTIPLIER TUBE R3991 Ruggedized, High Tempe.
Hamamatsu Corporation
R3991 - PHOTOMULTIPLIER TUBE
PHOTOMULTIPLIER TUBE R3991 Ruggedized, High Temperature (175°C) PMT for Oil Well Logging (MWD) 19 mm (3/4 Inch) Diameter, 10-stage, Head-On Type GENE.