Radiacode 103 pairs a scintillation crystal with a 3.5-inch touchscreen and an app that turns raw counts into a real gamma spectrum, naming isotopes such as Cs-137 or K-40 as it goes. It logs readings with GPS so you can map hotspots, and it is sensitive enough to check pottery, granite countertops or food for contamination. A pocket Geiger counter measures how much; this one tells you what.
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