sˈɑːlvənt ɪmpɹˈɛɡneɪɾᵻd ɹˈɛzɪnz sˈɜːz ɑːɹ pˈoːɹəs ɹˈɛzɪn pˈɑːɹɾɪkəlz wˌɪtʃ kəntˈeɪn ɐn ɐdˈɪʃənəl lˈɪkwɪd ˈɛkstɹæktənt ɪnsˈaɪd ðə pˈoːɹəs mˈeɪtɹɪks.
Solvent impregnated resins (SIRs) are porous resin particles which contain an additional liquid extractant inside the porous matrix.