A first embodiment which is a bimodal polymer having a weight fraction of a lower molecular weight component ranging from about 0. In a particular embodiment, the apparatus includes a a dynamic circuit structure that includes a dynamic node coupling a precharge circuit, a discharge circuit, and a gated keeper circuit. A single actuator is therefore used for two functions: firstly to open the dirt collector for emptying purposes and, secondly, to disengage the dirt collector from the separating apparatus for example for cleaning purposes. The first and second sampled signals may be combined to determine the next signal sampler output.