The present disclosure is directed to various methods and systems for monitoring real time efficiency of filters as well as testing the filters with tests that are similar to real world use of the filters to update technical specifications of the filters. The methods and systems monitoring the real time efficiency of the filters may utilize one or more particle counters to monitor their efficiency in real time. The data collected by the particle counters may be utilized to determine whether respective ones of the filters need to be replaced or regenerated by a backwash regeneration process. The updated technical specifications from the real world testing of the filters may be utilized in determining whether respective ones of the filters need to be replaced or regenerated. These real world testing and real time monitoring reduces the likelihood that workpieces are exposed to contaminant particles reducing scrap costs.

Apparatuses for controlling fluid flow are important components for delivering process fluids for semiconductor fabrication. These apparatuses for controlling fluid flow are formed with a variety of fluid flow components, including fluid flow components for mixing fluid flows. Fluid flow components for mixing flows utilize mixing elements configured to receive flows of two or more process fluid flows via fluid inlets, mix the fluid flow within the mixing element, and deliver mixed fluid to a down-stream fluid flow component or an outlet of an apparatus for controlling fluid flow.

The present disclosure is directed to various methods and systems for monitoring real time efficiency of filters as well as testing the filters with tests that are similar to real world use of the filters to update technical specifications of the filters. The methods and systems monitoring the real time efficiency of the filters may utilize one or more particle counters to monitor their efficiency in real time. The data collected by the particle counters may be utilized to determine whether respective ones of the filters need to be replaced or regenerated by a backwash regeneration process. The updated technical specifications from the real world testing of the filters may be utilized in determining whether respective ones of the filters need to be replaced or regenerated. These real world testing and real time monitoring reduces the likelihood that workpieces are exposed to contaminant particles reducing scrap costs.

Provided is an apparatus for processing a substrate, the apparatus including: a liquid treating chamber for liquid-treating a substrate; and a liquid supply unit for supplying a treatment liquid to the liquid treating chamber. The liquid supply unit includes: a supply tank for storing the treatment liquid therein; a circulation line connected to the supply tank to circulate the treatment liquid; and a liquid supply line having an opening/closing valve installed and branching from the circulation line to supply the treatment liquid to the liquid treating chamber. The supply tank is provided with a first stirrer that configured to apply flow pressure to the treatment liquid in the supply tank.

Methods and apparatus for gas mixing are provided. In some embodiments, a gas mixing apparatus includes: a tubular body having a wall extending longitudinally from a first end to a second end and having an outer side and an inner side that surrounds a central through opening and defining a first flow path between the first end and the second end; one or more inlet holes formed in the outer side of the wall; a plurality of exit holes formed in the inner side of the wall and communicating with the central through opening; and a plurality of longitudinal channels formed within the wall fluidly coupled to the one or more inlet holes and the plurality of exit holes, wherein the one or more inlet holes, the plurality of exit holes, and the plurality of longitudinal channels define a recursive second flow path that intersects with the first flow path.

A chemical solution supply system including: a first tank that stores a first chemical solution; a first pipe that is connected to the first tank and conveys the first chemical solution; a first filter unit that is connected to the first pipe and has a first filter through which the first chemical solution is filtered; a first valve that is provided in the first pipe between the first tank and the first filter unit; a second tank that stores a second chemical solution; and a second pipe that is connected to the second tank and the first pipe between the first filter unit and the first valve.