A fluid transfer device comprising: a first portion having a first closed end and a second open end , the first portion including a first connector configured to be connected to a first container , the first connector including a central passageway therethrough extending from the first closed end and the first connector comprising a cannula in fluid communication with the central passageway of the first connector ; and a second portion having a first closed end and a second open end , wherein the second end of the first portion extends at least partially into the second end of the second portion , the second portion including a second connector configured to be connected to a second container and a third connector spaced apart from the second connector , wherein the second and the third connector each includes a central passageway extending from the first closed end , wherein at least a portion of the first portion is axially and rotationally movable with respect to at least a portion of the second portion from a first position in which the first connector is aligned with the second connector to a second position in which the first connector is aligned with the third connector , and wherein the cannula of the first connector is configured to be in fluid communication with the second connector when being in the first position and axially advanced in the second portion and to be in fluid connection with the third connector when being in the second position and axially advanced in the second portion , characterized in that the fluid transfer device further comprises a third container sealably engageable with the second connector , wherein the third container is preferably a flexible container and that the third container is fitted over the second container and sealed to the second connector . a first portion having a first closed end and a second open end , the first portion including a first connector configured to be connected to a first container , the first connector including a central passageway therethrough extending from the first closed end and the first connector comprising a cannula in fluid communication with the central passageway of the first connector ; and a second portion having a first closed end and a second open end , wherein the second end of the first portion extends at least partially into the second end of the second portion , the second portion including a second connector configured to be connected to a second container and a third connector spaced apart from the second connector , wherein the second and the third connector each includes a central passageway extending from the first closed end , wherein at least a portion of the first portion is axially and rotationally movable with respect to at least a portion of the second portion from a first position in which the first connector is aligned with the second connector to a second position in which the first connector is aligned with the third connector , and wherein the cannula of the first connector is configured to be in fluid communication with the second connector when being in the first position and axially advanced in the second portion and to be in fluid connection with the third connector when being in the second position and axially advanced in the second portion , characterized in that the fluid transfer device further comprises a third container sealably engageable with the second connector , wherein the third container is preferably a flexible container and that the third container is fitted over the second container and sealed to the second connector . <EOS>