Glowy Tritium vs. Geiger Müller Tube (Patreon)

I must have had this tritium keychain for a while, because I remember asking our chemistry teacher in school if we could measure it with the geiger counter there. Being the typical German teacher with 0 passion for getting kids involved in science, she refused because it was her lunch break.

Well, now I can do it myself finally. Result: No noticeable radiation through the acrylic tube it is sold in. The bare glass vessel however causes a slightly elevated 'reading'  😁