Radioactive samples
Detector count rate are given in [1/sec]. Detector type: Geigerle with 3xBPW34 and AD8666 OP
Large alarm clock with radium painted numbers and pointers. Count rate: 3.519
Wrist watch with radium painted numbers and pointers. Count rate: 1.274
Small alarm clock with radium painted numbers and pointers. Count rate: 0.812
Old thorium containing mantle of a petroleum lantern. Count rate: 0.717
Uranium containing granite stone from the Black Forest area. Count rate: 0.942
Uranium containing granite stone illuminated with UV light. Green fluorescent dots of the uranocitrite are visible on the surface.
Uranium glass bowl illuminated with UV light. Count rate: 0.153
Uranium glass ashtray illuminated with UV light. Count rate: 0.121
Crystallized potassium chloride infusion solution and potassium containing fizzy tablet. Count rate: 0.010
Ceramic bowl with uranium glaze. Count rate: 5.045
5 TIG welding electrodes containing 2% thorium. Count rate: 0.140
Pitchblende on Dolomit, find spot: Hartenstein/Erzgebirge. Count rate: 50.392 (visible saturation)
Cigarette ash. Count rate: 0.117 (with S1223 alpha detector)
Conventional granite floor plate. net count rate: 0.011 (zero rate 0.005)
Superphosphate fertilizer containing 18% phosphorus. net count rate: 0.016 (zero rate 0.006)
Gaseous Tritium Light Source, GTLS. Betaradiator with small Beta energy, not detectable with BPW34 and alumina window.
With thorium oxide coated lens. Count rate: 0.139
Sodium-free dietsalt (contains potassium chloride). net count rate 0.016 (zero rate 0.005)
Trinitite sample (Ebay). Molded sand from the Trinity test site in New Mexico (N33 40.633 W106 28.533).
count rate 0.023 (zero rate 0.008)