Abstract: A form of crossflow filtration particle separator which receives a particle laden moving fluid surrounded by a clear moving fluid at a proximal end, and separates the particles into a collection zone, or collector, in response to vortices created by diagonal slits and baffles located from the center of the particle separator to its distal end. The filter operates horizontally in a small amount of space without use of physical filter media or the need of a high pressure flow, while allowing delicate particles to be separated without damage. Particle collection structures allow the separated particles to be carried away in a separate flow.

Abstract: A form of crossflow filtration particle separator which receives a particle laden moving fluid surrounded by a clear moving fluid at a proximal end, and separates the particles into a collection zone, or collector, in response to vortices created by diagonal slits and baffles located from the center of the particle separator to its distal end. The filter operates horizontally in a small amount of space without use of physical filter media or the need of a high pressure flow, while allowing delicate particles to be separated without damage. Particle collection structures allow the separated particles to be carried away in a separate flow.

Abstract: A submersible ultrasonic emitter is integrated with a dissolved oxygen (DO) or other aquatic probe so that biofouling of the sensor's membrane is minimized. Sonification, that is, exposure to ultrasound, precludes the need to use other biofouling elimination procedures such as water/air jets, chemical treatments, or biocides. The invention can be configured to readily integrate with existing probes from a variety of manufacturers, and eliminates membrane cleaning as the maintenance interval constraint for field or laboratory deployed sensors.