This application provides the healthcare profession with a method of quickly checking the compatibility of any two of the following intravenous drugs at the Y-site:AcetylcysteineAdrenalineAlfentanilAminophyllineAmiodaroneAprotininAtracuriumCalcium Chloride Calcium GluconateCiprofloxacinCisatracuriumClonidineCompound Sodium Lactate Solution (Hartmann's)Disodium Hydrogen PhosphateDobutamineDopamineDopexamineEsmololFentanylFurosemideGentamicinGlucose 4%, Sodium Chloride 0.18%Glucose 5%Glyceryl Trinitrate (GTN)Heparin (Sodium)Insulin (Soluble)Isosorbide DinitrateLabetalolMagnesium SulphateMannitolMetronidazole MidazolamMilrinoneMorphineNoradrenalineOmeprazolePotassium ChloridePotassium PhosphatePropofolRemifentanilRocuroniumSalbutamolSodium BicarbonateSodium Chloride 0.9%Sodium NitroprussideThiopentalVancomycinVasopressin (Arginine Vasopressin)Vecuronium