AQ400 Discrete Analyzer

SEAL Analytical | Ion Analysis/Colorimetry

The AQ400 robotic sampling arm works in conjunction with a stepper motor-drivensyringe that is responsible for aspirating, dispensing and mixing accurate and precisequantities of sample and reagent in miniaturized test tubes called reaction wells.

The sample and reagent mixture are incubated in heated reaction wells until thereaction is complete. A single aliquot is then transferred into a 10 mm path lengthoptical glass cuvette where the absorbance is read. Each sample is read in the same cuvette, in the same position in front of the detector. This is similar to SEAL colorimetricflow systems, known for their high reproducibility and lowest detection limits.

The flow through cuvette eliminates the issue of reaction well variability and scratchingfound in direct read discrete systems. In the SEAL AQ series, liquid is moved notthe cuvette – fewer moving parts equal higher stability and reliability of the system.

Once the absorbance is read, the glass cuvette is thoroughly cleaned and checked,ensuring no carryover or cross contamination.

Your environmental analytical chemistry has just got easier with the SEAL AQ400 Discrete Analyzer . This compact, bench-top analyzer has been designed by chemists to address the needs of environmental laboratories requiring high levels of automation, a wide range of chemistries, limits of detection that ensure compliance with regulatory requirements and integration with LIMS. Like the other Discrete Analyzers in the SEAL range, the AQ400 will give you the best analysis and eliminate problems inherent in analyzers designed for clinical use. SEAL Analytical has the largest installed base of Discrete Analyzers in the USA and we continue to develop the software and hardware for the specific needs of environmental samples.

Why Select the AQ400 Discrete Analyzer for Your Environmental Analytical Chemistry?

The AQ400 gives you:

• The ability to use as a standalone spectrophotometer - ideal for COD.
• Very high capacity.
• Silent operation.
• Advanced robotics for faster sample preparation/ hour.
• No carry-over or cross contamination.
• EPA recommended optically pure and inert glass cuvette.
• Optionallonger path length. Standard 1cm path length.
• Lower detection limits.
• True automated sample blanking
• Automated spiking
• Easy maintenance & easy change syringe
• Cooledand non-cooled reagent positions
• Prepares up to 10 working standards for the calibration curve.
• The chemical reaction is brought to full completion emulating manual and segmented flow methods.
• Ultra low reagent consumption.
• Add samples after a run has started.
• Tests programmable per sample to reduce analysis time.
• Completely unattended operation ideal for overnight-programed runs.
• Methods have USEPA approval for both wastewater and drinking water.
• UKAS methods equivalent to "UK Blue Book"

Discrete Analyzer Methods

The broad range of methods for the SEAL AQ400 Discrete Analyzer include analytes important for environmental laboratories analyzing water, wastewater, soils etc. Methods include:

• Alkalinity
• Ammonia
• Chloride
• Cyanides
• Nitrate / Nitrite
• Nitrite
• Phenolics
• Phosphate, ortho
• Phosphorous, total
• Silicate
• Sulfate
• Total Kjeldahl Nitrogen
• Total Phosphorous

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