Update3:
alpha,beta,gamma sensitive tube (LND712) https://www.ebay.com/itm/314534851121
Item fully in comply with Nuclear Regulatory Commission Definition of Exempt Quantities
(from the Introduction to Ex-empt Consumer Product Uses, NRC 10 CFR 30) - safe to own, use and transport.
Sample of Thorium 232
Flat, small and safe (tight sealed in metallized foil) "hot" check source for testing Geiger counter,
energy calibration of gamma spectrometer, science fair experiments etc.
package size (inside): ~60x80mm
one sample average "temperature": ~40 SI base unit.
GUARANTED to be able check any working Geiger meter!
Shipping in safe package, from EU.
tags: beta ray source , gamma ray source , alpha particle source , alpha ray source, thorium nitrate , ion chamber checker , dosimeter , radiometer , geiger counter check source, geiger counter test source
"RarTEC R&D RCS-02"