A method for the gravimetric volume determination of liquid volumes in a clinical diagnostic analyzer with a device, said device comprising (i) a housing the following components being contained in said housing: (i-a) an air-pressure sensor and (i-b) a humidness sensor, for sensing air pressure and humidness respectively at predetermined points within said housing, and (i-c) an electronic processing unit for processing electrical output signals delivered by by said sensors (31,41), (ii) a load cell for gravimetric volume determination, said load cell comprising (ii-a) a weighing container for receiving a liquid to be weighed with said load cell, a windbreak which shields said weighing container from air flow, (ii-b) an evaporation trap which prevents evaporation of liquid loaded into said weighing container, (ii-c) a temperature sensor, the electronic processing unit processing electrical output signals delivered by said load cell and by said sensor, said method comprising (a) calibrating said load cell outside of said clinical diagnostic analyzer system using a weight for calibration, (b) introducing said load cell into said housing (c) adjusting the positioning of said load cell to correspond to the positioning of said load cell during step (a), the housing being placed in the clinical diagnostic analyzer, (d) introducing a liquid sample to be weighed into the load cell and transmitting an output signal generated by the load cell to the electronic processing unit, said output signal being representative of the weight of said sample, (e) measuring temperature of the environment of load cell with the temperature sensor and transmitting an output signal generated by this sensor to the electronic processing unit, (f) measuring air pressure of the environment of load cell with the air-pressure sensor and transmitting an output signal generated by this sensor to the electronic processing unit, (g) measuring humidness of the environment of load cell with humidness sensor and transmitting an output signal generated by this sensor to the electronic processing unit, (h) processing in the electronic processing unit the output signals generated according to steps (a) to (c), said processing including the calculation of the volume of the liquid sample which corresponds to the weight of the liquid sample measured with load cell. (i) a housing the following components being contained in said housing: (i-a) an air-pressure sensor and (i-b) a humidness sensor, for sensing air pressure and humidness respectively at predetermined points within said housing, and (i-c) an electronic processing unit for processing electrical output signals delivered by by said sensors (31,41), (i-a) an air-pressure sensor and (i-b) a humidness sensor, for sensing air pressure and humidness respectively at predetermined points within said housing, and (i-c) an electronic processing unit for processing electrical output signals delivered by by said sensors (31,41), (ii) a load cell for gravimetric volume determination, said load cell comprising (ii-a) a weighing container for receiving a liquid to be weighed with said load cell, a windbreak which shields said weighing container from air flow, (ii-b) an evaporation trap which prevents evaporation of liquid loaded into said weighing container, (ii-c) a temperature sensor, the electronic processing unit processing electrical output signals delivered by said load cell and by said sensor, (ii-a) a weighing container for receiving a liquid to be weighed with said load cell, a windbreak which shields said weighing container from air flow, (ii-b) an evaporation trap which prevents evaporation of liquid loaded into said weighing container, (ii-c) a temperature sensor, the electronic processing unit processing electrical output signals delivered by said load cell and by said sensor, (a) calibrating said load cell outside of said clinical diagnostic analyzer system using a weight for calibration, (b) introducing said load cell into said housing (c) adjusting the positioning of said load cell to correspond to the positioning of said load cell during step (a), the housing being placed in the clinical diagnostic analyzer, (d) introducing a liquid sample to be weighed into the load cell and transmitting an output signal generated by the load cell to the electronic processing unit, said output signal being representative of the weight of said sample, (e) measuring temperature of the environment of load cell with the temperature sensor and transmitting an output signal generated by this sensor to the electronic processing unit, (f) measuring air pressure of the environment of load cell with the air-pressure sensor and transmitting an output signal generated by this sensor to the electronic processing unit, (g) measuring humidness of the environment of load cell with humidness sensor and transmitting an output signal generated by this sensor to the electronic processing unit, (h) processing in the electronic processing unit the output signals generated according to steps (a) to (c), said processing including the calculation of the volume of the liquid sample which corresponds to the weight of the liquid sample measured with load cell.