Chromatography apparatus

Claim 1

CHROMATOGRAPHY APPARATUS COMPRISING FIRST AND SECOND MEMBERS IN ABUTTING, SLIDING RELATIONSHIP WITH ONE ANOTHER, SAID FIRST MEMBER HAVING AT LEAST FOUR OPENINGS IN ITS ABUTTING SURFACE AND SAID SECOND MEMBER HAVING AT LEAST FOUR OPENINGS IN ITS ABUTTING SURFACE, SAID OPENINGS IN SAID FIRST AND SECOND MEMBER BEING SO POSITIONED RELATIVE TO EACH OTHER THAT UPON RELATIVE MOVEMENT OF SAID FIRST AND SECOND MEMBERS TO PRESCRIBED RELATIVE POSITIONS VARIOUS SELECTIBLE REGISTRATIONS ARE ESTABLISHED BETWEEN SAID OPENINGS IN SAID FIRST AND SECOND MEMBERS AND THAT AT ALL OF SAID PRESCRIBED RELATIVE POSITIONS ALL OF SAID OPENINGS IN SAID FIRST MEMBER ARE IN REGISTRATION, RESPECTIVELY, WITH ALL OF SAID OPENINGS IN SAID SECOND MEMBER, AN INLET PASSAGE CONNECTING WITH ONE OF SAID OPENINGS IN SAID FIRST MEMBER, AN OUTLET PASSAGE CONNECTING WITH A SECOND OF SAID OPENINGS IN SAID FIRST MEMBER, A LOOP PASSAGE INTERCONNECTING A THIRD AND FOURTH OF SAID OPENINGS IN SAID FIRST MEMBER, AT LEAST TWO CHROMATOGRAPHIC SEPARATING COLUMNS MOUNTED ON SAID SECOND MEMBER, ONE OF SAID COLUMNS CONNECTING WITH TWO OPENINGG IN SAID SECOND MEMBER AND ANOTHER OF SAID COLUMNS CONNECTING WITH TWO OTHER OPENINGS IN SAID SECOND MEMBER, AND MEANS FOR CAUSING RELATIVE MOVEMENT BETWEEN SAID FIRST AND SECOND MEMBERS TO SSAID PRESCRIBED RELATIVE POSITION TO SELECT VARIOUS REGISTRATIONS BETWEEN SAID OPENINGS IN SAID FIRST AND SECOND MEMBERS, THEREBY SELECTING VARIOUS FLOW PATH RELATIONSHIPS BETWEEN SAID INLET AND OUTLET PASSAGES AND SAID COLUMNS.