A device for preparing a solution from a sample and a reagent, the device includes a microfluidic array having a sample supply inlet, a reagent supply inlet, a discharge outlet, a solution collection outlet, a sampling zone to which the inlets are connected, first and second preparation chambers connected to the sampling zone, arranged to either side of the sampling zone such that the liquid flowing from one preparation chamber to the other flows through the first sampling zone, the first preparation chamber having a volume that is variable between a minimum volume and a calibrated volume. The device includes valves interrupting the flow of the fluid at least at the two inlets and the collection and discharge outlets.

The powder transfer system includes a transfer pipe, through which powder is transferred, having a plurality of sections along the powder transfer direction, a plurality of sensing units provided for each section of the transfer pipe and provided to detect vibration of the transfer pipe when the powder is transferred for each section, a plurality of vibration units provided to apply vibration to each section of the transfer pipe, and a control part provided to individually control operation of the vibration unit for each section of the transfer pipe based on vibration data obtained from the sensing unit for each section of the transfer pipe.

Proposed is a fluid metering device including a mixer receiving fluid in a storage tank, a metering tank metering and supplying the fluid to the mixer, a first transfer device transferring the fluid from the storage tank to the metering tank, a second transfer device transferring an input of the metered fluid to the mixer, a sensor measuring a fluid mass in the metering tank, and a controller stopping the first transfer device and activating the second transfer device with the initial remaining fluid greater than the input, and allowing the second transfer device to transfer the amount of input from the metering tank to the mixer, based on the fluid mass from the sensor and preset first and second metering set values, so that it is possible to quickly input a desired amount of fluid step by step, and to precisely adjust a fluid input into a final process.

Methods, apparatus, devices and systems for mixing and dispensing multi-component materials. The mixing and dispensing may be performed using a mobile, enclosed dispenser that can be used to supply a mixed multi-component material at the point of use. In some embodiments, the components to be mixed into the multi-component material may be supplied in cartridges.

Methods, apparatus, devices and systems for mixing and dispensing multi-component materials. The mixing and dispensing may be performed using a mobile, enclosed dispenser that can be used to supply a mixed multi-component material at the point of use. In some embodiments, the components to be mixed into the multi-component material may be supplied in cartridges.

A gravimetric blending system can include fluid storage reservoirs, a pivotable dispensing arm having dispensing nozzles, wherein each dispensing nozzle is configured to dispense a predetermined amount of fluid from each fluid storage reservoir a fluid container, and a scale configured to detect a weight applied to the scale. The gravimetric blending system may further include a controller configured to receive user inputs, identify a fluid contained within one of the fluid storage reservoirs that will contribute to the blend and the required weight of the fluid. The controller may be further configured to identify the expected change in weight to be detected by the scale, cause an amount of the fluid to be dispensed, detect the weight applied to the scale after the fluid has been dispensed, compare the detected weight to the expected change in weight, and determine if the expected weight of the fluid was dispensed.