The Model 90-12 Energy Compensated GM probe when married with the Model 190 Count Rate Survey Meter is ideal for applications where discrimination of beta and gamma/x-rays is useful information. Typical applications for this probe include Nuclear Medicine laboratories and environmental surveys. Energy compensated GM probe provides flat energy response for reduced GM tube over-response at low energy dose rates Beta shield discriminates between beta rays and gamma/x-ray radiation 360\u00ba beta shield 2 beta windows expose 180\u00ba for optimum sweet spot Rugged ABS plastic housing Exposure rates up to 200 mR/hr"