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The SEAL AQ700 discrete analyzer is ideal for high-throughput nutrient analysis in environmental laboratories. With four robotic arms and four sample trays, it enables extended walkaway time and unattended operation.
This compact, bench-top analyzer is specifically designed by chemists to address the needs of high-throughput environmental laboratories. It supports a wide range of chemistries, ensures regulatory compliance with low detection limits, and integrates seamlessly with LIMS.
Like the other Discrete Analyzers in the SEAL range, the AQ700 delivers superior analytical performance. It avoids the common issues that occur in analyzers originally designed for clinical applications.
Why choose AQ700 Discrete Analyzer for your environmental analytical chemistry?
Automation
- True unattended operation with the ability to run overnight
- Automated standard preparation and dilution of over range samples
- True automated sample blanking for background colour correction
- Automated sample spiking
Efficiency
- Ultra low reagent consumption
- Ability to add samples after a run has started
- Advanced robotics for faster sample preparation per hour
- Easy maintenance & easy change syringe
- Cooled and non-cooled reagent positions
Compliance
- No carry-over or cross contamination
- Lower detection limits
- The chemical reaction is brought to full completion emulating manual and segmented flow methods
- Standard 10 mm quartz cuvette
- EPA recommended optically pure and inert glass cuvette
- Methods have USEPA approval for both wastewater and drinking water
Methods
The broad range of methods for the SEAL AQ700 Discrete Analyzer includes analytes important for environmental laboratories analyzing water, wastewater, soils, and more. These are in compliance with EPA methods, ISO methods, Agricultural methods, and Seawater methods.
Methods include:
- Alkalinity
- Ammonia
- Chloride
- Cyanides
- Nitrate / Nitrite
- Nitrite
- Phenolics
- Phosphate, ortho
- Phosphorous, total
- Silicate
- Sulfate
- Total Kjeldahl Nitrogen
- Total Phosphorous
- And much more
How does the SEAL AQ700 Discrete Analyzer work?
- The SEAL AQ700 uses four robotic sampling arms and four sampling trays to manage high-throughput analysis. A stepper-motor driven syringe aspirates, dispenses, and mixes precise quantities of sample and reagent into miniaturized test tubes (reaction wells).
- Users incubate samples and reagents in the reaction wells for a pre-programmed time.
- A single aliquot is transferred to the stop/flow optical-quality glass cuvette. It then measures the absorbance in the stationary optical bench, ensuring the best signal-to-noise ratio.
- Reaction times are programmable from seconds to minutes, allowing the chemical reaction to reach full completion and steady state. This emulates manual and segmented flow methods, ensuring low detection limits and excellent reproducibility.
- A second robotic arm transfers the reactant/sample from the reaction wells to the detection area. Since the liquid is moved, not the tray, the sample is always read in the same position and cuvette, reducing variability and increasing reliability due to fewer moving parts.
- The unique probe washer pumps water through the unit as the probe moves up and down, effectively cleaning the outside of the probe before it enters the next liquid. This process eliminates the risk of cross-contamination from reagent drips.
- Once the absorbance is read, it automatically and thoroughly cleans the cuvette. This eliminates any carryover or cross-contamination between samples.
