Reaction tray

For each sample assay, the reagent probes (RPP1 and RPP2) dispense reagent into cuvettes in the reaction tray (RRV).  The sample probe (SPP) dispenses diluted sample into the cuvettes after R1 and before R2. The mixture is then stirred by the reaction mixers (MIXR1 and MIXR2), producing the desired reaction.

For analysis, the reaction tray rotates the cuvette in front of the spectrophotometer, where the cuvette’s absorbance is measured. After analysis, the cuvettes are washed by the reaction washer (WUD).

The RRV contains 340 reusable cuvettes (20 sets of 17 cuvettes).

The RRV cuvettes are immersed in the reaction tank in an oil-heat bath. This keeps the cuvettes at a constant temperature of 37°C for sample analysis.

Reaction tray operation