Disclosed are a monitoring feedback system and a monitoring feedback method. System comprises: a first accommodating device and a second accommodating device, respectively configured to store a first solution and a second solution; a mixing device, configured to store a mixed solution, the mixed solution being composed of the first solution and the second solution; a first concentration detecting device, configured to detect a current concentration of the mixed solution; and a concentration compensating module, configured to obtain, based on a difference between the current concentration and a predetermined concentration, a first compensation amount of the first solution to be compensated to the mixing device or a second compensation amount of the second solution to be compensated to the mixing device, and to compensate the mixed solution based on the first compensation amount or the second compensation amount so that the concentration of the compensated solution reaches the predetermined concentration.

The invention provides methods for assessing one or more predetermined characteristics or properties of a microfluidic droplet within a microfluidic channel, and regulating one or more fluid flow rates within that channel to selectively alter the predetermined microdroplet characteristic or property using a feedback control.

A hair dye dispenser according to an embodiment of the present invention includes a housing having an opening hole formed on one side of which a hair dye is provided, a plurality of cartridges disposed inside the housing and accommodating at least one dyeing material, a main body in which the plurality of cartridges are rotatably disposed, a main motor for rotating the main body so that a first cartridge of the plurality of cartridges is located adjacent to the opening hole, a discharge module for discharging the dyeing material contained in the first cartridge, and an accommodating body in which a basket accommodating the dyeing material discharged by the discharge module is placed, wherein the discharge module may include an elevating body that pressurizes the first cartridge when moving up and is separated from the first cartridge when moving down.

A method to dispense fluid products is implemented in a dispensing machine by combining gravimetric and volumetric dispensing techniques which comprises at least one containing unit to contain at least one fluid and equipped with a dispensing mean, a dispensing station comprising a dispensing head fluidically connected to the containing unit and equipped with at least one dispensing nozzle, a user interface to enter input data for the preparation of a fluid product, and a control unit connected to the user interface and to the dispensing mean of the containing unit so as to command the dispensing of the fluid.

This in-line active and reverse calculating mass balance blending system can maintain a chemical at desired control points, such as with respect to concentration, temperature, and/or pressure, while the output flow rate is changing dynamically to a point of use. A blending unit is configured to receive and blend at least two species and deliver a mixture at selected concentrations to points of use. A controller can be configured to determine a mass balance to maintain the concentrations in the mixture using information from metrology systems and a flow in an output to the at least one point of use. The controller also can be configured to maintain a concentrations in the mixture within a concentration range by controlling flow rates to the blending unit.

The present invention relates to a device (60) for manufacturing pharmaceutical compositions, comprising: a support (62); a mixing container (16); a plurality of reservoirs (18, 20) containing starting materials for the composition of a medicament; at least one dispensing device (64, 66) that is designed to dispense an amount of a starting material into the mixing container, wherein the dispensing device is assembled, or is designed to be assembled, with a reservoir; a stirring device (68) that is able to stir the mixing container and/or the contents of the mixing container; and an electronic module (74) for controlling the at least one dispensing device.

An apparatus for dissolving a gas into a liquid includes a liquid inlet for supplying liquid into the apparatus, a gas inlet for supplying gas into the liquid within the apparatus and a venturi arranged to dissolve the gas into the liquid passing through the venturi. The apparatus also includes an outlet for the liquid and dissolved gas downstream of the venturi. At least part of the liquid inlet, at least part of the gas inlet, at least part of the venturi and at least part of the outlet are integrally formed in a single piece of material.

The efficiency of water disinfection can be significantly increased by supplying the ozone in combination with oxygen to an inlet of a cavitation pump or a line atomizer. A compressor can be introduced at an inlet of the cavitation pump or the line atomizer, compressing the gas mixture at a pressure higher than the pressure within pump or the atomizer. The compressed gases are provided to the inlet of the atomizer or the pump, where the compressed gases mix with the water and enter the cavitation pump or the line atomizer (where most of the dissolution of the gases happens). The compressor allows to increase the amount of oxygen and ozone provided to the pump or the line atomizer, increasing their dissolved concentration. In addition to the disinfecting properties, the higher level of oxygen correlates to an improved taste of the water.

Embodiments include systems and methods of in-line mixing of hydrocarbon liquids from a plurality of tanks into a single pipeline. According to an embodiment, a method of admixing hydrocarbon liquids from a plurality of tanks into a single pipeline to provide in-line mixing thereof includes determining a ratio of a second fluid flow to a first fluid flow based on signals received from a tank flow meter in fluid communication with the second fluid flow and a booster flow meter in fluid communication with a blended fluid flow. The blended fluid flow includes a blended flow of the first fluid flow and the second fluid flow. The method further includes comparing the determined ratio to a pre-selected set point ratio thereby to determine a modified flow of the second fluid flow to drive the ratio toward the pre-selected set point ratio. The method further includes controlling a variable speed drive connected to a pump thereby to control the second fluid flow through the pump based on the determined modified flow, the pump being in fluid communication with the second fluid flow.

A system and related methods for monitoring and dosing peroxycarboxylic acids, particularly peracetic acid, in food processing applications based upon desired concentration of the processing solution. The concentration of the peroxycarboxylic acid measured and additional peroxycarboxylic acid being added to the processing solution if the measured concentration is below a threshold level of the desired concentration, and additional water being added to the processing solution if the measured concentration is above a threshold level of the desired concentration. The system and related methods capable of being used in utilized with either live stream or static, storage tank based systems, to keep the concentration of peroxycarboxylic acid at or near desired concentration levels while experiencing less variation than experienced with conventional flow-based or hand-mixed systems.