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    AOC-20i/AOC-20s - Features

    Auto Injector/Auto Sampler for GC/GC-MS

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    The AOC-20 provides the highest degree of reliability.

    Reproducibility and reliability are what make an auto injector valuable to a laboratory. Reproducibility can be adversely affected not only by less than optimum injection conditions, but through sample evaporation as well.Reliability is a measure of how well the instrument faithfully reproduces injection of the sample. The AOC-20i ensures that both of these needs are met.
    To illustrate typical reproducibility of different types of compounds and demonstrate the inertness of the GC injection port, a 500 ppm Grob test mix standard sample was injected 10 times.
    Note that the coefficient of variation (C.V.%) was less than 0.3% for all compounds. Also note that neither the acidic (peaks 2 & 3) nor the basic compounds (peaks 5 & 8) show any evidence of tailing, indicating the inertness of the sample path in the GC.

      peak1 peak2 peak3 peak4 peak5 peak6 peak7 peak8 peak9
    1 18687 16607 19118 29138 23337 15642 15126 20503 16802
    2 18605 16523 19040 28976 23240 15601 15081 20400 16753
    3 18526 16482 18973 28888 23168 15538 15039 20342 16716
    4 18631 16555 19066 29049 23287 15623 15120 20440 16785
    5 18668 16616 19139 29130 23346 15672 15161 20517 16862
    6 18679 16616 19136 29111 23353 15666 15167 20508 16852
    7 18622 16576 19070 29044 23282 15618 15090 20436 16796
    8 18628 16574 19095 29080 23307 15629 15112 20456 16808
    9 18654 16559 19085 29044 23282 15615 15116 20459 16806
    10 18663 16601 19101 29112 23335 15624 15119 20424 16798
    mean 18636.3 16570.9 19082.3 29057.2 23293.7 15622.8 15113.1 20448.5 16797.8
    C.V.% 0.252 0.262 0.259 0.266 0.244 0.238 0.247 0.262 0.252

    Note that sample reproducibility can vary significantly based upon the type of sample and the analytical conditions used.
    The results presented are illustrative and are not guaranteed for all sample types and analyses. 

    Attachment and removal are easy.

    Mounts on the GC without any nuts or screws No alignment necessary

    Easy syringe replacement via front access door

    Just one cable connection

    Flexible sample handling of up to 150 vials, greatly enhances laboratory productivity.

    The AOC-20s Auto Sampler carousel and robotic arm provide for sample transport to the AOC-20i Auto Injector using 1.5 mL and 4.0 mL vials. The system is smart too! It can tell the difference between the vial types by reading the information from the vial tray in use. The AOC-20i/AOC-20s is a powerful automation tool for the GC laboratory that allows the user to take full advantage of the GC system's capabilities.