Low Level Radioactive Rock Sample - (NORM) Naturally Occurring Radioactive Materials License Exempt - low radioactive rock sample size and CPM activity will vary. Useful for testing Geiger counters and performing nuclear experiments Shipping compiles to Federal NRC and postal regulations Radioactive minerals are for educational and scientific use only. Radioactive Rock Specimen. The rock sample is Naturally Occurring Radioactive Materials (NORM). Uranium Rock samples are useful as check sources for testing Geiger Counters. No analysis is performed on the rock sample. So the source of the rock's radioactivity may be any number of radioactive elements or decay products. Counts Per Minute (CPM) activity rate listed on the label is the activity level that includes all radiation types: alpha, beta and gamma. Since alpha radiation is the main form of radioactivity given off by the ore sample, if your Geiger counter can not detect alpha radiation it will show a much lower Counts Per Minute (CPM). When checking with an alpha sensitive Geiger counter it is important to set the Geiger counter to its CPM mode and to locate the hot spot on the ore sample. Each sample is checked and measured for its radioactivity using an NRC certified Digital Geiger counter that has passed ANSI-STD N323A calibration using a NIST traceable source from an independent government licensed lab conforming to NRC regulations 10-CFR-34, 10-CFR-35, making the Geiger counter suitable for regulatory inspections. License exempt. Radioactive sample size and CPM activity will vary. Shipped in labeled metal container as shown. Disposal: US Federal Regulations do not require any special requirements to dispose of NORM material, however local city and state regulations may differ from Federal Regulations. One needs to check with local regulators on how to dispose of NORM material. Shipping Information: We are always in compliance with Section 13 from part 40 of the NRC Nuclear Regulatory Commission rules and regulations and Postal Service regulations specified in 49 CFR 173.421 for activity limits of low level radioactive materials. The item is shipped in accordance with Postal Service activity limits specified in Publication 52.