UNCLASSIFIEP In the time available, a complete study of all possible interferendes in all sample types was notrapesseae: for old samples are the Ce** The two ma,jor interferences #4 pair and Pm**’. These, and Cs” were tested by adding known amounts o* the isotope to inactive bond. samples containing strontium carr er and rego the activity ir the final product which should represent the 5r°° waaer ee The results of the analyses ere shown in Table AWS. mSv UNCLASSIFIED