... glass, double-alkali photocathode Diameter of 28.5mm(1.12 inch), nine stage, side-on photomultiplier tubes, borosilicate ... counter, biochemical analyzer, X-ray camera timer, optical density meter, optical properties to identify,replicate equipment. General data: Spectral ... Index--Gain3x105Pulse rise time4ns Diameter of 28.5mm(1.12 inch), nine stage, side-on photomultiplier tubes, borosilicate ...