The Discrete Analyser AQ2+  by SEAL Analytical is a nutrient analyser that uses the principle of Discrete Analysis. Each test occurs in a separate or discrete reaction vessel. Discrete Analysers allow multiple tests on a single sample; varied tests on a single sample; ultra Low reagent Use and up to 150 tests per hour. The AQ2+ Discrete Analyser features: Programmable reaction times; Chemistry that is brought to full completion; 100% Optical Quality Glass Cuvette.

The AQ2+  Discrete Analyser employs a robust robotic sampling arm working in conjunction with a stepper motor-driven syringe. The syringe is used for aspirating, dispensing and mixing accurate and precise quantities of sample and reagent into miniaturized test tubes, called reaction wells.

In the AQ2+ Discrete Analyser the sample and reagents are incubated in the reaction wells for a pre-programmed time. A single aliquot is then transferred into the Optical Quality Glass Cuvette. The absorbance is read on the reactant in our stationary optical bench to assure the best possible signal to noise ratio.

This nutrient analyser's reaction times are user programmable from seconds to minutes. We have optimised the SEAL AQ2 Discrete Analyser methods to ensure that the chemical reaction is brought to full completion and steady state. This completed reaction exactly emulates both the Manual and the Segmented Flow Methods.

In the AQ2+ Discrete Analyser the chemical reaction comes to a full steady state eliminating the problems inherent in the Flow Injection Analysis Methodology. The Flow Injection System does NOT bring the reaction to full completion, decreasing sensitivity and potentially introducing kinetic effects. Once the absorbance is read, the cuvette is thoroughly cleaned, eliminating any carry over or cross contamination.

More about nutrient analysis using the AQ2+ Discrete Analyser:

Glass Cuvette

• 100% Optical Quality Glass Cuvette used for precise absorbance measurment
• Robust Detection System utilizes a stationary measurment cell
• 10 mm optimum path length

Reagent Wedges

• Reagent wedges with on-board cooling
• Use only 20ul - 400 ul reagent per test
• Built in Reagent Level Sensor - verifies reagent volume
• Reagent expriation date tracked through software

Reaction Wells

• Low cost, disposable wells used for each discrete reaction
• Constant heating and programmable reaction time ensure reaction reaches completion

Cadmium Coil

• Integrated automated cadmium coil reduction for nitrate/nitite determination
• In situ coil regeneration is full automated through the software

Flexible Software

• Highly flexible software - designed with user input
• QCProTM Data Quality Assurance System
• User specifies QC types, limits and corrective actions upon QC failure

Call 02 4735 5054 to discuss your nutrient analyser requirements.