How It Works What's Safe? Compare Products Shield Sham SAR Testing		Specific Absorption Rate Testing SAR (Specific Absorption Rate) testing is the current measurement used by government regulatory agencies to determine compliance with nonionizing radiation hazard standards and is commonly used in cell phone testing. In this test a cell phone is strapped to the side of a plastic head filled with gel to simulate the density of the brain. A sensor placed inside this gel gives a 3 dimensional readout of the hotspots created from the cell phone radiation. Many scientists believe SAR standards should not be used because the simulated test procedures do not represent the actual effects of radiation upon the body. Simulations are required because probes would literally have to be inserted into the head of a person while they are using a phone to derive accurate SAR results. Furthermore, the use of SAR thermal measurements and test procedures are being debated worldwide because they are based upon theoretical and unsubstantiated levels of radiation that can be absorbed by the body without harm. SAR is measured as Watts of radiation energy per kilogram (2.2 pounds) of brain tissue, where the SAR limit is an absorption threshold of Watts per kilogram as measured over any one gram of tissue. Some analog and virtually all digital phones emit more than 2 Watts per kilogram into head tissue, but are considered compliant with SAR standards because the signals are pulsed, or divided, over a one second time period. The latest research showing that the induction of biological effects from EMFs have little to do with energy absorption has shown this form of testing to be irrelevant. SAR tests do not include the extendable antenna mast. SAR simulated test procedures do not represent the actual effects on the body Tests are based upon theoretical and unsubstantiated levels of radiation that can be absorbed by the body without harm Induction of biological effects from EMFs have little to do with energy absorption.