polo188However, it has been reported that the combination of P188 with small molecule preservatives or with other surfactants can induce aggregate formation. 10, 17 Jacobs etPoloxamer 188 solid; CAS Number: 9003-11-6; Synonyms: Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol),Lutrol F68 at Sma-Aldrich