OBJECTIVE:To investigate the stability and adsorption of 4 common injections administered by PVC and TPE disposable infusion sets.METHODS:The 4 common injections,including ciprofloxacin lactate sodiumchioride,levofloxacin lactate sodium chloride,levofloxacin sodium chloride,and tropisetron sodium chloride,were filled and sealed in,or flew through the disposable infusion sets.Samples were collected as acheduled,ciprofloxacin,evofloxacin and tropisetron were determined by HPLC method.The stability of ciproflo...