along conduit 20 and causes a portion of the carrier stream containing the sample sa to flow to analyzer 75 for analysis in known fashion controller 80 can also be used to correlate the results obtained by analyzer 75 with respect to the particular fermentor from which it was obtained hence a complete record of the fermentors 40a 40c can be obtained automatically and without human intervention alternatively valve 70 can divert the flow to a collection point not shown that is not physically connected with an analyzer also valve 70 may divert the stream alternately to any of a plurality of analyzers or collection points as best seen in fig2 the carrier stream flowing in conduit 20 passes without interruption through any one of injectors 50a 50c which are identical six port valves injector 50a is illustrated to exemplify these injectors as shown fermentor tube 45a receives sample sa from fermentor 40a not shown and is connected to sample inlet port 54a sample sa flows from port 54a through ports 54a 2 54a 5 and 54a 6 and out to waste through waste tube 56a a sample loop 55a between ports 54a 2 and 54a 5 has a storage capacity typically from about 2 milliliters ml to about 50 ml as is conventional the injector 50a comprises a valve sleeve 52a and rotating grooved stem 53a for the control of fluid flow the inner walls of the grooves and ports can be of the same polytetrafluoroethylene.