It can be used with separation funnels, stirring plugs, condenser tubes and other vessels to form a distillation and condensation reaction device for the purification of substances. Available in 250ml-3000ml, the number of necks can be customized. Undertake various PFA welding, mold opening and other services. #teflon #flask #Roundbottomedflask #labware #semiconductor #newenergy