Patent ID: 7556772
Filing Date: 2009-07-07
Classification: G01N,Y10T

Abstract:
1. A liquid analyser, including: a reactor vessel; an ozone generator having an ozone outlet connected to the reactor vessel to deliver ozone to the reactor vessel; a sample pump having an inlet for connection to a source of a liquid to be tested, and an outlet connected to the reactor vessel through a sample delivery line; a base solution reservoir; a base pump having an inlet connected to the base solution reservoir and an outlet connected to the reactor vessel; the reactor vessel having an outlet for discharge of oxidised liquid sample from the reactor vessel; a multicomponent detector for determining multiple components in an oxidized liquid sample; the multicomponent detector comprising at least one measuring cell for receiving the oxidised liquid sample, measuring the oxidised liquid sample optically using a frequency of absorption of at least one component in the oxidised liquid sample; means for delivering the oxidised liquid sample to the multicomponent detector comprising: a sample chamber connected to the outlet of the reactor vessel for reception of oxidised liquid sample from the reactor vessel; and an analysis pump having an inlet connected to the sample chamber and an outlet connected to the multicomponent detector; means for mixing a reagent with the oxidised liquid sample upstream of the multicomponent detector comprising: a mixer with an inlet and an outlet; and a reagent pump having an inlet connected to a reagent reservoir and an outlet connected to the inlet of the mixer, the outlet of the analysis pump also being connected to the inlet of the mixer, the outlet of the mixer being connected to the multicomponent detector; and wherein the analysis pump is reversible for flowing oxidised liquid sample into a sample chamber upstream of the measuring cell after a measurement has been made.