Automatic sample changer – An autosampler computerizes the stacking of research center specimens into the example injector of a chromatograph. In mix, the autosampler and the example injector are known as the autosampler infusion framework – a framework that isolates mixes from the specimen so the chromatograph can recognize them. There are five principle sorts of autosampler infusion frameworks:

S/SL (split/splitless) infusion frameworks

On-segment bay frameworks

PTV injector frameworks

Gas source channel frameworks

Cleanse and trapsystems

With its dynamic capacity to trap low level aggravates, the cleanse and trap framework is utilized for tests whose mixes happen at low-ppb (parts per billion) levels. When they pick an autosampler for cleanse and trap, numerous labs limit their decisions to the Centurion WS Autosampler and the Archon/OI Model 4552 Autosampler. On the off chance that you are assessing these autosamplers, the correlations underneath will help your assessment.

Centurion WS Autosampler versus Archon Autosampler

Contrasting the Centurion WS with the Archon/OI Model 4552 ought to be finished utilizing criteria that decide the general estimation of an autosampler to the client. These criteria are:

Scientific prevalence

Mechanical vigor



Simplicity of support

Scientific Superiority

The Centurion WS highlights electronic, three-position conveyance, a programmable 1ul-100ul conveyance, and does not require preparing. These highlights give it a standout amongst the most adaptable, solid, predictable, and practical IS/Surr conveyance frameworks available. By utilizing a quick heated water wash in a settled volume circle that keeps water in the pathway hot, and flushing the minimizer parameter soil needle and exchange line with P&T’s Bake gas, it likewise includes incredible vestige diminishment.

The Archon/OI Model 4552 highlights mechanical, two-position conveyance, a 1ul conveyance, and requires preparing. These highlights make it less adaptable, solid, reliable, and financially savvy than the Centurion WS. Its moderate high temp water wash with a syringe additionally offers less remainder security.

Mechanical Robustness

The Centurion WS shows an abnormal state of mechanical vigor because of the accompanying specs:

A completely upheld X-Y-Z arm

Water vial examining that happens in the plate

A fiber optic vial sensor

Vial detecting amid transport just for soil tests

A lift instrument that lone conveys soil

Particular electronic outline

A P&T concentrator that oversees stream control

Disposal of the syringe system found in many autosamplers

In correlation, the specs for the Archon/OI Model 4552 are that it:

Has an arm whose left side is unsupported

Does not test water vials in the plate

Highlights a mechanical switch (not a fiber optic sensor) that must be controlled amid vial transport

Has a lift that moves both water and soil tests

Contains an across the board printed circuit board rather than secluded electronic plan

Highlights isolate weight and stream control

Utilizations a syringe instrument, which can prompt syringe blunders.


The Centurian WS accomplishes high efficiency because of its double concentrator mode for fluid and soil tests, and its liberal specimen situating of 100 water tests and 90 soil tests. These highlights make cost investment funds for the GC/MC process and increment unattended autosampler operation. The Archon/OI Model 4552 does not have a double concentrator mode and just highlights situating for 51 tests.


Including remote control and natural Windows XP Software that is shown on a 15″ brilliant screen, the Centurion WS is one of the most straightforward autosamplers to utilize. Conversely, the Archon/OI Model 4552 can’t be controlled remotely, and highlights an interface that is controlled through a little keypad.

Simplicity of Maintenance

The Centurion WS has three highlights that make it simple to keep up: a blunder following and test log, on-load up constant stream graphs, and finish on-board symptomatic checks. The Archon/OI Model 4552 does not have these highlights.


An autosampler for cleanse and trap is a vital venture for free scientists and research facilities that dissect solids and fluids utilizing the GC/MC process. Albeit numerous research facilities utilize the Archon/OI Model 4552, it doesn’t offer the same logical prevalence, mechanical power, efficiency, convenience, and simplicity of support as the Centurion WS. For extensive labs and autonomous analysts whose subsidizing relies upon inquire about cost and quality, the Centurion WS the best autosampler for cleanse and trap.

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