AQ400 Discrete Analyser

Here is why you will want to add the AQ400 discrete analyser to your laboratory:

1. Working standards produced from stock solution
2. Up to 10 working standards for the calibration curve
3. A longer path length (optional). 1cm path length supplied standard
4. Elimination of carry-over and cross contamination
5. Lower detection limits
6. Automatic dilution pre and post run on samples
7. Programmable tests per sample
8. Reduced analysis time
9. An analyser that can also be used as a standalone spectrophotometer-e.g. for COD
10. Completely unattended operation (ideal for overnight programmed runs)
11. The ability to add samples after a run has started
12. Ultra-low reagent consumption
13. Cooled and non-cooled reagent positions
14. Easier maintenance & easy change syringe.

A Discrete Analyser With EPA Compliant Methods

• All SEAL Discrete Analysers are supported by an extensive library of methods specifically for environmental analysis .
• SEAL Analytical has individual letters of approval for SEAL Discrete Analyser environmental methods, with the letters stating the methods are acceptable for both wastewater and drinking water compliance monitoring

How Does the AQ400 Discrete Analyser Work?

• A robust sampling arm works in conjunction with a stepper motor-driven syringe that is responsible for aspirating, dispensing and mixing accurate and precise quantities of sample & reagent in miniaturised test tubes (reaction wells).
• The sample and reagent are incubated in the reaction wells for a pre-programmed time. A single aliquot is transferred into a 10mm, 100% optical glass cuvette, with the absorbance read on the stationary reactant to ensure the best possible signal to noise ratio.
• A second robotic arm moves reactant/ sample from the reaction wells to the detection area. The sample is always read in the same position in front of the detector, in the same glass cuvette, eliminating issues of scratching and reaction well variability found with direct read systems. As the liquid is moved, not the tray, fewer moving parts means higher reliability.
• Supplied standard methods have optimised reaction times ensuring the reaction is brought to completion. The complete reaction emulates the manual & segmented flow methods and ensures the lowest detection limits and good reproducibility.
• After the absorbance is read, the glass cuvetted is thoroughly cleaned and checked ensuring no carry-over or cross contamination.
• With the patented probe flusher, water from the wash bottle is pumped through the probe flusher as the probe moves up and down through it to clean the outside before dipping in the next liquid.