Devices and methods for generating droplets. An exemplary device comprises a substantially planar base portion including a bottom surface having a plurality of microfluidic channels formed therein as recessed regions of the bottom surface. The device also comprises a plurality of protrusions projecting from a top surface of the base portion and each formed integrally with the base portion. The device further comprises a sample well, a carrier well, and a droplet well. Each well has an upper portion created by one of the protrusions. A cover layer is attached to the bottom surface of the base portion and seals a bottom side of each microfluidic channel.

Methods of generating droplets. In an exemplary method, a device including a sample well, a carrier well, a droplet well, and a plurality of microfluidic channels is selected. The microfluidic channels include a first channel, a second channel, and a third channel. A discrete volume of sample-containing fluid is placed into the sample well, and a discrete volume of carrier fluid is placed into the carrier well. A pressure differential is created after placing the discrete volumes, to cause fluid flow. Sample-containing fluid flows from the sample well to a droplet-generation region of the device via the first channel. Carrier fluid flows from the carrier well to the droplet-generation region via the second channel. Sample-containing droplets and carrier fluid flow from the droplet-generation region to the droplet well via the third channel.

In a stirred tank chemical reactor the mean age of the reactor contents affects a number of properties of the product, including for example the homogeneity of the product. The mean average age of the reactor contents can be determined by constructing a transparent model of the reactor and filling it with a fluid containing a fluorescent dye and having flow properties comparable to those of the reactor in use. A light is shone on the fluid as it is stirred under reaction conditions and a clear fluid flow into the model. Pictures are taken of the reactor contents and the mean fluid age of the contents of the model are determined relative to the exit age of the contents. This approach can be applied to determine for example which reactor ports to use, what agitator to use, what flow rates to use to improve reactor function.

System, including apparatus and methods, for performing droplet-based assays. The system may comprise a droplet transporter configured to pick up droplets from each emulsion of an array of reacted emulsions and to drive flow of the droplets through a detection region. The system also may comprise a detector configured to collect data related to one or more analytes from individual droplets of the reacted emulsions as such individual droplets travel through the detection region. The system further may comprise a controller programmed to determine, based on the data collected, an aspect of the one or more analytes in one or more samples included in droplets of the emulsions.

The invention relates to a stirring body, in particular for generating a current in a wastewater treatment tank, stirring body having a hyperboloid-like or truncated cone-like form and a central connector piece for connection to a stirring shaft. To simplify the production of the stirring body and to reduce the transport outlay, it is proposed in accordance with the invention for the stirring body to be formed from a plurality of segments which are interconnected along joining zones extending from a peripheral edge in the direction of the connector piece.

A micromixer includes: a first channel plate where a first channel and a plurality of first branch channels are each formed by a non-through groove in a front surface, and a first confluence channel is formed by a non-through groove in a rear surface, and includes a first communication channel that communicates the first branch channels with the first confluence channel; a first lid plate that covers the front surface; a second channel plate where a second confluence channel is formed by a non-through groove in the front surface, and a second channel and a plurality of second branch each formed by a non-through groove in the rear surface, and includes a second communication channel that communicates the second branch channels with the second confluence channel; and a second lid plate that covers the rear surface of the second channel plate.

The invention relates to a device for circulating wastewater received in a tank, in which device a conical or hyperboloid-like stirring body is mounted on a vertical stirring shaft, wherein the stirring body is composed from a plurality of segments produced from metal along radially extending joining zones.

The present disclosure relates to a tool set for disassembly and assembly of a crusher blade. The tool set of the present disclosure may provide a dedicated hand tool that facilitates quicker and safer disassembly and assembly of the blade when separating or replacing the crusher blade. That is, during the disassembly and assembly of the blade inside the crusher container, the blade can be disassembled and assembled by rotating the fastening member for fixing the blade in the opposite direction of the fastening direction without having to hold the sharp blade directly by hand, thereby ensuring that the blade replacement or removal can be performed safely and quickly.

A blending device having an interlock system which may comprise a plurality of subassemblies. A thermal detector may be configured to be proximity with matter being blended for human consumption. Interlock system may further include a blade interlock contact and a compressive contact. The blender vessel may be configured to compress the compressive contact to a communicative configuration when connected with the blade assembly. Interlock system may utilize a blender base assembly that has base interlock contacts and a motor. The blade assembly may be configured to releasably mount to the blender base assembly and may cause the base interlock contact and the blade interlock contact to come into electrical communication with each other. The interlock system may ultimately result in the motor being obstructed from operation unless certain conditions are met. The interlock system may further utilize one or more than one logic circuit element.

Gas-liquid injection apparatus, having a body, a liquid passage, a bypass passage, a gas inlet, a gas-liquid mixing cavity and a gas-liquid mixing passage, wherein the body includes an inlet end face and an outlet end face, and the liquid passage includes a liquid inlet that opens onto the inlet end face and a passage outlet that is arranged on the outlet end face, and includes a converging section and a throat section that are arranged in sequence downstream of the liquid inlet; one end of the bypass passage opens to the converging section, and the other end is connected to the gas-liquid mixing cavity, and the bypass passage allows liquid flowing in the liquid passage to bypass to the gas-liquid mixing cavity; the gas-liquid mixing cavity is located at the periphery of the liquid passage; the gas inlet opens onto the inlet end face.