Which of the following statements is FALSE? Group of answer choices A radiation worker can receive the entire annual allowed dose equivalent of 5 rems (under US NRC regulations) from inhaling the DAC for 2000 hours. Polyethylene sample bottles are necessary for samples containing tritium to reduce the possibility of losses through diffusion. lodine is the only fission product present as a negative ion in significant amounts in milk, so it can be removed by an anionic resin. A Marinelli beaker has a re-entrant cavity which fits over a gamma ray detector. This counting geometry increases the gamma sensitivity compared to standing a bottle on top of the detector.