*Class Kit Shown (4-458)Refill: Microchemistry Acids, Bases, & SaltsSKU: 4-458RContact Us to PurchaseKit ContentsSodium HydroxideAcetic AcidAmmonium HydroxideVinegarHydrochloric AcidThymol Blue IndicatorBromothymol Blue IndicatorUniversal IndicatorPhenolphthalien IndicatorMethyl Orange IndicatorMedicine CupsToothpicks