... borosilicate glass, double-alkali photocathode Diameter of 28.5mm(1.12 inch), nine stage, side-on photomultiplier tubes, borosilicate ... electron microscopy, turbidity meter, particle counter, biochemical analyzer, X-ray camera timer, optical density meter, optical properties to ... Index--Gain3x105Pulse rise time4ns Diameter of 28.5mm(1.12 inch), nine stage, side-on photomultiplier tubes, borosilicate ...