Shimadzu AOC 5000 PAL Autosampler. USED. Manufacturer: Shimadzu. Model: AOC5000. The AOC - 5000 is the only GC sample injection system that combines liquid, large volume and headspace injection in one single instrument. Injection speed 0.01 µl/sec to 250 µl/sec (selectable) Vial size 600 1ml mi Markham, Ontario, Canada. I have been using SPME on Agilent and Varian systems for a long while but just started working on a Shimadzu AOC 5000. I only use a 1cm fiber type. Firstly has some got the optimal injection penetration depth in mm for a SPME liner on a GC2014 plus? to save me working it out manually. I realize that the SPME manual recommends a 22mm Syringes for AOC-6000. Standard recommendation: 227-37167-01: 10 µl syringe with metal plunger for standard application. 227-37168-01: 10 µl syringe with PTFE tipped plunger for gas and viscous samples, minimized plunger bending. 225-19744-03: 10 µl syringe with 26G for sample preparation steps. 225-19744-11: 2.5 mL syringe for headspace