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A mixing chamber for liquids, which are supplied to the mixing chamber in measured quantities one after the other alternating over a period of time, in particular for liquid chromatographs is divided by a fine-pored filter plate (109) into two areas (105, 106). The inlet pipe (111) is connected to o

A mixing chamber for liquids, which are supplied to the mixing chamber in measured quantities one after the other alternating over a period of time, in particular for liquid chromatographs is divided by a fine-pored filter plate (109) into two areas (105, 106). The inlet pipe (111) is connected to one area and the outlet pipe (112) is connected to the other of these areas. The two areas (105, 106) each widen out in a conical shape from the opening of the connected pipe (111) towards the filter plate (109). The filter plate (109) preferably consists of a steel or glass frit with a pore size in the range of 2 to 50 m

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Liquid-mixing apparatus for producing a substantially homogeneous mixture of a plurality of liquids for supplying such mixture to a liquid chromatograph, said apparatus comprising a plurality of liquid supply means for supplying a plurality of liquids, housing means having inlet means and outlet mea

Liquid-mixing apparatus for producing a substantially homogeneous mixture of a plurality of liquids for supplying such mixture to a liquid chromatograph, said apparatus comprising a plurality of liquid supply means for supplying a plurality of liquids, housing means having inlet means and outlet means, liquid measuring time control means connected between said supply means and said inlet means for supplying the liquids in small measured quantities one after the other in succession to said inlet means for repetitive time cycles covering successive periods of time, said housing means having a single mixing chamber therein, and a single fine-pored filter plate disposed in said mixing chamber and dividing said mixing chamber into a single inlet portion and a single outlet portion, said inlet portion of said mixing chamber having a single inlet opening connected to said inlet means, said outlet portion of said mixing chamber having a single outlet opening connected to said outlet means, said filter plate having a small pore size in the range of two to fifty microns, said inlet portion of said mixing chamber widening out between said inlet opening and said filter plate at an opening angle more than 90°, said outlet portion of said mixing chamber widening out between said outlet opening and said filter plate at an opening angle more than 90°, said filter plate having a diameter substantially greater than the diameter of said inlet opening whereby there is a correspondingly great variation between the maximum and minimum path length between said inlet opening and the various portions of said filter plate, said filter plate having a substantially greater diameter than the diameter of said outlet opening whereby there is a correspondingly great variation between the maximum and minimum path length between various portions of said filter plate and said outlet opening, said fine-pored filter plate forming a buffer member having an inlet side surface on which substantially uniform liquid pressure builds up and over which surface the liquid flow density is substantially identical, said great variations in path length and the small pore size of said filter plate causing substantially homogeneous mixing of the small successive quantities of the liquids supplied to said inlet opening.