Manifold for solvent mixing in liquid chromatography systems

An apparatus for combining fluids, comprising:

• a pipe-shaped portion having an outlet port at one end and an internal outlet conduit providing an internal fluidic passageway to the outlet port, the pipe-shaped portion having, in a side thereof, a plurality of openings into the internal outlet conduit;
• and
• a main body having an outer diameter with a plurality of inlet ports for receiving microfluidic tubing, each inlet port including a tube receptacle ending at a tip and an inlet conduit that directly connects the tip to one of the plurality of openings in the side of the pipe-shaped portion, thereby providing a direct internal fluidic passageway from the tip to the outlet conduit, each of the plurality of inlet conduits lying in a same plane as every other of the plurality of inlet conduits,
• wherein the outlet port has a threaded outer diameter.

An apparatus for combining fluids, comprising:

• a pipe-shaped portion having an outlet port at one end and an internal outlet conduit providing an internal fluidic passageway to the outlet port, the pipe-shaped portion having, in a side thereof, a plurality of openings into the internal outlet conduit;
• a main body having an outer diameter with a plurality of inlet ports for receiving microfluidic tubing, each inlet port including a tube receptacle ending at a tip and an inlet conduit that directly connects the tip to one of the plurality of openings in the side of the pipe-shaped portion, thereby providing a direct internal fluidic passageway from the tip to the outlet conduit, each of the plurality of inlet conduits lying in a same plane as every other of the plurality of inlet conduits;
• a tube fitting for mating with a fluidic inlet valve of a pumping unit;
• a cap with a threaded inner diameter for mating with the threaded outer diameter of the outlet port, the cap further comprising a surface with a central opening;
• and
• tubing connecting the central opening of the cap to the tube fitting.

An apparatus for combining fluids, comprising:

• a pipe-shaped portion having an outlet port at one end and an internal outlet conduit providing an internal fluidic passageway to the outlet port, the pipe-shaped portion having, in a side thereof, a plurality of openings into the internal outlet conduit;
• and
• a main body having an outer diameter with a plurality of inlet ports for receiving microfluidic tubing, each inlet port including a tube receptacle ending at a tip and an inlet conduit that directly connects the tip to one of the plurality of openings in the side of the pipe-shaped portion, thereby providing a direct internal fluidic passageway from the tip to the outlet conduit, each of the plurality of inlet conduits lying in a same plane as every other of the plurality of inlet conduits,
• wherein the tube receptacle of each inlet port is a receptacle for a tube fitting and has a tapered conical tip that meets the inlet conduit of that inlet port.