These are single rock samples in the 1,000 to 3,000 CPM range on Ludlum Model 3 with 44-9 probe. The low activity samples are excellent for beginners or as an inexpensive radiation source. Be aware that these samples tend to be small to very small. You will receive one random rock. The pictures are a general representation.
These are single rock samples in the 1,000 to 3,000 CPM range on Ludlum Model 3 with 44-9 probe. The low activity samples are excellent for beginners or as an inexpensive radiation source. Be aware that these samples tend to be small to very small. You will receive one random rock. The pictures are a general representation.
