A rotary float includes an elongated tubular arm with a drive shaft rotatably mounted therethrough. Large, strong gelled agglomerates of pollutant and polysaccharide or hydrocolloid are formed with the help of suitable cations. The invention further relates to a method and a device for producing a circuit arrangement having a prescribed electrical capacitance. In addition, the method alters the allocation of resources, such as code power, to provide only that necessary for successful decoding of the transmitted frame.