Abstract: A two-tier in vitro growth apparatus and method for cultivating Oestridae larvae and maggots is provided. The growth apparatus includes a top tier container and a bottom tier container where the top tier container has a growth container residing within the volume of the top tier container. The growth container is constructed of a semipermeable material and facilitates cultivating Oestridae larvae and maggots within an interior space of the growth container.

Abstract: The invention relates to a device and a method for detecting particles, in particular parasites, in drinking water adapted to on-line application. In particular, the invention b) relates to a method for detecting parasites in water, said method comprising: Passing at least a part of the water through a filter; Applying indirect sonication with ultrasound to said filter to release parasites which have been collected in said filter without disrupting said parasites; Collecting parasites for detection; and Detecting the collected parasites. This serves to collect parasites in the filter and/or increase the concentration of parasites before the filter and/or disrupt aggregates without disrupting the parasites per se. The invention further relates to a concentration device for filter filtration concentration of particles from a volume of a fluid. The concentration device comprises an ultrasonic transducer that is configured to clean the filter.