(WO9714960-A1)      Method for determining of the biological oxygen demand of sewage where a sample of sewage in a test vessel is mixed with biologically-neutral water to a predetermined dilution and the oxygen concentration is measured, based on the reaction of a known quantity of biomass with the sample diluted sewage. The successive samples of sewage are introduced into the oxygen-saturated water in the test vessel, agitated, the oxygen consumption per unit time is measured, and the test vessel is washed out with the dilutant water.    Also claimed is an apparatus for carrying out the above method.    Pref. the reaction vessel (1) contains a measuring probe which can be immersed in the sewage sample. A suction pump (13), which has a cylinder (15) built into the reaction vessel (1), and a piston (14) is used to draw sewage samples into, and to expel fluid from the reaction vessel (1). There is an agitator (6) to agitate the diluted sewage sample in the reaction vessel bath (2). The oxygen probe (18), the suction pump (13) and the agitator (6) are assembled into a probe head (4) which is sealed into the reaction vessel (1).    USE -   Used for determining the biological oxygen demand of sewage.    ADVANTAGE -   It is a simple and quick method, using simpler apparatus to obtain a sufficiently accurate result, compared with known methods.    (EP855023-A1)      Method for determining of the biological oxygen demand of sewage where a sample of sewage in a test vessel is mixed with biologically-neutral water to a predetermined dilution and the oxygen concentration is measured, based on the reaction of a known quantity of biomass with the sample diluted sewage. The successive samples of sewage are introduced into the oxygen-saturated water in the test vessel, agitated, the oxygen consumption per unit time is measured, and the test vessel is washed out with the dilutant water.    Also claimed is an apparatus for carrying out the above method.    Pref. the reaction vessel (1) contains a measuring probe which can be immersed in the sewage sample. A suction pump (13), which has a cylinder (15) built into the reaction vessel (1), and a piston (14) is used to draw sewage samples into, and to expel fluid from the reaction vessel (1). There is an agitator (6) to agitate the diluted sewage sample in the reaction vessel bath (2). The oxygen probe (18), the suction pump (13) and the agitator (6) are assembled into a probe head (4) which is sealed into the reaction vessel (1).    USE -   Used for determining the biological oxygen demand of sewage.    ADVANTAGE -   It is a simple and quick method, using simpler apparatus to obtain a sufficiently accurate result, compared with known methods.    (JP11513791-W)      Method for determining of the biological oxygen demand of sewage where a sample of sewage in a test vessel is mixed with biologically-neutral water to a predetermined dilution and the oxygen concentration is measured, based on the reaction of a known quantity of biomass with the sample diluted sewage. The successive samples of sewage are introduced into the oxygen-saturated water in the test vessel, agitated, the oxygen consumption per unit time is measured, and the test vessel is washed out with the dilutant water.    Also claimed is an apparatus for carrying out the above method.    Pref. the reaction vessel (1) contains a measuring probe which can be immersed in the sewage sample. A suction pump (13), which has a cylinder (15) built into the reaction vessel (1), and a piston (14) is used to draw sewage samples into, and to expel fluid from the reaction vessel (1). There is an agitator (6) to agitate the diluted sewage sample in the reaction vessel bath (2). The oxygen probe (18), the suction pump (13) and the agitator (6) are assembled into a probe head (4) which is sealed into the reaction vessel (1).    USE -   Used for determining the biological oxygen demand of sewage.    ADVANTAGE -   It is a simple and quick method, using simpler apparatus to obtain a sufficiently accurate result, compared with known methods.    (US6114172-A)      Method for determining of the biological oxygen demand of sewage where a sample of sewage in a test vessel is mixed with biologically-neutral water to a predetermined dilution and the oxygen concentration is measured, based on the reaction of a known quantity of biomass with the sample diluted sewage. The successive samples of sewage are introduced into the oxygen-saturated water in the test vessel, agitated, the oxygen consumption per unit time is measured, and the test vessel is washed out with the dilutant water.    Also claimed is an apparatus for carrying out the above method.    Pref. the reaction vessel (1) contains a measuring probe which can be immersed in the sewage sample. A suction pump (13), which has a cylinder (15) built into the reaction vessel (1), and a piston (14) is used to draw sewage samples into, and to expel fluid from the reaction vessel (1). There is an agitator (6) to agitate the diluted sewage sample in the reaction vessel bath (2). The oxygen probe (18), the suction pump (13) and the agitator (6) are assembled into a probe head (4) which is sealed into the reaction vessel (1).    USE -   Used for determining the biological oxygen demand of sewage.    ADVANTAGE -   It is a simple and quick method, using simpler apparatus to obtain a sufficiently accurate result, compared with known methods.