A device for connection to a medical connector, the device comprising: a cap comprising an integral body, a closed end, an annular wall having a length L A extending from the closed end to an open end and defining a chamber containing an absorbent material and disinfectant or antimicrobial agent, the open end having a peripheral ledge extending radially from the open end defining an engagement surface; the annular wall having an exterior wall surface and an interior wall surface; the interior wall surface defining an opening adjacent to the open end; the interior wall surface comprising internal threads adjacent the closed end, the internal threads adapted and sized to engage a female luer connector, the absorbent material and the disinfectant or the antimicrobial agent contact the male luer connector, the female luer connector and the hemodialysis connector; the exterior wall surface comprising a plurality of radial protrusions; a container comprising an annular container wall having a container wall length L C extending from a container closed end to a container open end face, the container having an interior container surface and an exterior container surface, the container housing the cap, the container having a complementary plurality of depressions that engage the plurality of radial protrusions; and a peelable seal on the container open end face to prevent the disinfectant or the antimicrobial agent from exiting the chamber; characterized in that: the opening of the interior wall surface sized and adapted to receive a male luer connector, a female luer connector and a hemodialysis connector, wherein the male luer connector frictionally engages the interior wall surface upon insertion into the chamber; wherein the male luer connector rests on the peripheral ledge upon being fully inserted in into the chamber, and wherein the internal threads adjacent to the closed end partially extend along a length of the interior wall surface. a cap comprising an integral body, a closed end, an annular wall having a length L A extending from the closed end to an open end and defining a chamber containing an absorbent material and disinfectant or antimicrobial agent, the open end having a peripheral ledge extending radially from the open end defining an engagement surface; the annular wall having an exterior wall surface and an interior wall surface; the interior wall surface defining an opening adjacent to the open end; the interior wall surface comprising internal threads adjacent the closed end, the internal threads adapted and sized to engage a female luer connector, the absorbent material and the disinfectant or the antimicrobial agent contact the male luer connector, the female luer connector and the hemodialysis connector; the exterior wall surface comprising a plurality of radial protrusions; a container comprising an annular container wall having a container wall length L C extending from a container closed end to a container open end face, the container having an interior container surface and an exterior container surface, the container housing the cap, the container having a complementary plurality of depressions that engage the plurality of radial protrusions; and a peelable seal on the container open end face to prevent the disinfectant or the antimicrobial agent from exiting the chamber; characterized in that: the opening of the interior wall surface sized and adapted to receive a male luer connector, a female luer connector and a hemodialysis connector, wherein the male luer connector frictionally engages the interior wall surface upon insertion into the chamber; wherein the male luer connector rests on the peripheral ledge upon being fully inserted in into the chamber, and wherein the internal threads adjacent to the closed end partially extend along a length of the interior wall surface. the opening of the interior wall surface sized and adapted to receive a male luer connector, a female luer connector and a hemodialysis connector, wherein the male luer connector frictionally engages the interior wall surface upon insertion into the chamber; wherein the male luer connector rests on the peripheral ledge upon being fully inserted in into the chamber, and wherein the internal threads adjacent to the closed end partially extend along a length of the interior wall surface.