Product

Laboratory Instruments

Mass Spectrometer Systems

Various accessories for GCMS-QP2010 series

AOC-20i/s Auto Injector/Auto Sampler

Automatic sampling system AOC-20 Series

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The AOC-20i auto injector is the perfect solution for automated analyses. Its proven reliability and reproducibility allows the user to take full advantage of the GC or GC/MS system capabilities. When paired with the AOC-20s autosampler carousel, your laboratory's productivity can be greatly increased. The carousel accomodates up to 150 1.5 mL vials or 96 4.0 mL vials.

Simplified Maintenance

The AOC-20 is highly reliable and capable of high sample throughput, yet it is lightweight and easy to remove when routine injection port maintenance is required. The enhanced needle guide virtually eliminates bent syringe needles; syringe changes are easy to accomplish through the front door of the unit.

Reliable Injection Performance

Possible injection modes include traditional, solvent flush, solvent flush with second solvent, and large volume injection. The AOC-20 series can perform the functions of direct liquid injection, on-column injection, ambient headspace and large volume injection. These capabilities are the most available from a single autosampler. The high precision of the injector has been demonstrated by reproducibility studies (Grob test mixture) that yielded C.V. values of less than 0.3%!

Complete Control

The AOC-20 offers control through fiber optic or RS-232C cable. Specify and save parameters from PC-based systems (CLASS-VP, GC-10, CLASS-5000) or from the Shimadzu C-R8A Chromatopac data processor.

AOC-20i
AOC-20s
Sample injection method
Liquid sample injection via special microsyringe
Sample volume
0.1-8.0 µl, 0.1 µl steps (using 10ul syringe)
0.5-40 µl, 0.5 µl steps (using 50ul syringe)
2.5-200 µl, 2.5 µl steps (using 250ul syringe)
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Number of samples
6 vials (with option, 12 possible)
1.5ml sample vials - 150 vials
4ml sample vials - 96 vials
Sample vials
Glass construction, 1.5ml, 4ml, screw top, PTFE-coated septum
Rinse solvent vial
Glass construction, 4ml, screw top, PTFE-coated septum
Number of sample injections
1-99 injections per sample
Syringe speed
2 Modes: Fast and Slow
Plunger speed
3 Modes: Fast, Medium and Slow
Wait time
0-99sec following sample aspiration (in 0.1sec steps)
Type of sample injection
3 Modes: Traditional, Solvent Flush and Solvent Flush with a Second Solvent
Injection volume linearity
±0.5% (injection volume 1-5 µl,sample n-C12)
Cross contamination
Less than 10-4 (as determines with a 1% diphenyl in hexane using 4 solvent rinses)
Priority sample
A priority sample injection can be injected during a sample sequence, then the sequence can be resumed.
Dual injection system Available on GC-17A platform only. One set of AOC-20s can feed sample vials to two sets of AOC-20i
Sample cooling / heating 0-60°C, with optional cooling rack connected to a general laboratory circulating water bath
External control
Includes optional optical link or RS232C interface
Power requirements
AC100/115/220V±10% 50/60Hz 100VA
Dimensions, weight
AOC-20i W126mm x D78mm x H380mm 2.5kg
AOC-20s External diameter 320mm, Height 135mm 2.4kg
Power supply W260mm x D420mm x H70mm 2.8kg
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Instrument Compatibility
GC-2010 or GC-14A/B, GC-17A