High sample capacity, up to 160 vials


Highly precise and accurate liquid injection


Highly flexible to cover the most demanding injection requirements and techniques


Automatic access to 3 injector ports


Fully controlled through the Master GC user interface or the software

Master AS

Automatic Liquid Sampler


Master AS

Autosamplers are responsible for the first steps of an analysis and can significantly increase result repeatability and extend analytical capabilities. The MASTER AS Liquid Autosampler, a robotic X-Y-Z coordinate sampling system, delivers superior flexibility, repeatability, and performance to increase sample throughput and meet each laboratory’s changing workload.

The easy to use liquid autosampler is totally controlled through the MASTER GC touchscreen. Analysis can be performed unattended by using the straightforward interface to set all parameters and the AS Sequences. Unlike built-in autosamplers, the extremely flexible MASTER AS features three separate and removable 2-mL vial racks for a total capacity of 160 samples.

Furthermore, 10-mL and 20-mL vial racks are also available for a capacity of 65 samples. Screw, crimp, and snap top vials can be used according to the users’ needs and convenience. The autosampler has a capacity for up to five 10-mL solvent vials and up to five 10-mL waste vials, presenting numerous solvent possibilities to eliminate carry-over. Additionally, the sample trays are far from the GC oven, preventing possible sample degradation and solvent evaporation caused by heat exposure.

All injection parameters can be optimized according to the laboratory’s needs, the sample type, and the application. The MASTER AS allows the utilization of up to seven different syringe capacity types ranging from 5 μL to 500 μL, offering a great choice of injection volumes from 0.1 μL to 500 μL. The syringe can be easily exchanged by using the Syringe Replacement function, which brings the Y axis of the MASTER AS to a handy position.

The MASTER AS presents unmatched injection capabilities. The same vial can be sampled up to 100 times and the sample can be introduced into three different injectors without requiring autosampler re-alignment or any calibration procedure.

Master GC

Fast GC Gas Chromatograph
A Breakthrough in Fast GC Performance


Turn-Key Analyzers
Superior Petrochemical Solutions


Time of Flight
Speed is Knowledge

Master AS

Automatic Liquid Autosampler
High Sample Throughput Liquid Autosampler

Master SHS

Static Headspace Sampler
Outstanding Sensitivity

HSS 86.50 Plus

Static Headspace Sampler
Affordable Excellence

Master DHS

Dynamic Headspace Sampler
Ultimate Versatility

Master TD

Thermal Desorber
Extended Sampling, Outstanding Sensitivity

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