DIGESTION REACTOR AND ANALYTICAL DEVICE FOR DETERMINING A DIGESTION PARAMETER OF A LIQUID SAMPLE

A digestion reactor for digesting a substance contained in a liquid sample, comprising: a digestion container for accommodating the liquid sample; and a heating apparatus comprising at least two heating shoes, especially heating shoes arranged opposite one another, each of which has a heating surface facing the digestion container and contacting a surface portion of the outer wall of the digestion container. An analytical device for determining a parameter of a liquid sample, especially a digestion parameter, such as chemical oxygen demand, total carbon content, total phosphate content, total iron content or total nitrogen content, can comprise such a digestion reactor as a well as a transport and dosing system, which is embodied to withdraw from a sample supply a predetermined volume of a liquid as a liquid sample and to transport the liquid sample into the digestion reactor; and a measuring transducer for registering a measured variable correlated, measured value of the liquid sample accommodated in the reactor.