From Longman Dictionary of Contemporary Englishseparate somebody/something ↔ out phrasal verb1 SEPARATEto divide a group of people or things into smaller groups We must separate out these different factors and examine each one.2 SEPARATEto remove one type of thing or person from a group from Many older people may prefer not to be separated out from the rest of the adult population. → separate→ See Verb table
Examples from the Corpus
separate out• Mr Damant will have to separate these out.• They obviate the need to walk about with a small shovel and separate bags.• The data used was taken from two separate surveys carried out in 1977 and 1981.• Although separate reports out of Toronto have Gretzky all but dealt to the St. 