1 Set J321 Geiger Tube Counter Hard Beta Detectors with Ion Chamber the Tube for Nuclear Radiation D

Starting voltage: Less than 350VRecommended working voltage: 380VMinimum terrace length: 80VMaximum plateau slope: 10%\/80VLimit operating voltage: 600VMaximum background count rate: 25 times\/minuteService life: 1 x 109 pulsesColour:transparentMaterial:GlassPackage Contents:1 x J321 Geiger tube1 x ion chamberOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.