Relative filter efficiencies for sampling radon daughters in air.
D000398:Air Pollution, Radioactive / Q000032:analysis*; D001729:Bismuth / Q000032:analysis; D005374:Filtration / Q000295:instrumentation*; D007854:Lead / Q000032:analysis; D011059:Polonium / Q000032:analysis; D011868:Radioisotopes / Q000032:analysis; D011886:Radon / Q000032:analysis*
D011868:Radioisotopes; D007854:Lead; D011059:Polonium; D011886:Radon; D001729:Bismuth