The attenuation of rays in the air is proportional to the square of the distance, so eyes (or other important organs) should not be in close contact with X-rays for a long time. When changing samples, just stretch your arm a little. Try not to point the probe directly at people.
If you know how to regulate the operation, this radiation amount is not much larger than people's usual living environment. It is much smaller than X-ray chest X-ray, and it is also much smaller than cosmic rays on the plane.