Fill out my online form.
This link is just for tube,you will just get TEN PIECE tube.
J304 Geiger Tube Specification:application temperature:-40°C~55°CCould be used for :γRay 20mR/h~120mR/hand β Ray in range 100~1800 ChangingIndex/minutes·CM2 soft β Ray(Both beta and gamma radiation detetion)Working Voltage: 360-440VWorking Current: 0,015-0,02 mASensivity to Gamma Radiation: 0.1 MeVOwn Background: 0,2 Pulses/sLength:90±2mmDiameter:10±0.5mm