| abstract |
A discretionary automated chemical testing apparatus for conducting multiple chemical tests on a plurality of samples. A loop conveyor carrying rows of tubes along various stations at which steps in chemical testing is performed with a sample dispensing assembly picking up and dispensing a test sample in the tubes, reagent dispensing assembly metering desired amounts of reagents at the proper station, heating means at the stations as required for the chemical test being performed, a testing assembly analyzing the results, tube cleaning and drying means preparing the tubes for reuse, and control means selectively controlling the sequential and multiple analysis. |