Methods and systems for detecting membrane blockage in a gas detector are disclosed. In some embodiments, the gas detector comprises a membrane configured to define a sensing chamber of the gas detector. The gas detector further comprises a strain sensor operatively connected to the membrane, the strain sensor configured for generating output signals related to strain in the membrane. The gas detector comprises a controller operatively connected to the strain sensor. The controller is configured to: determine a strain in the membrane based on the output signals; and determine a condition of the membrane based on the determined strain, wherein the determined condition indicates whether the membrane is blocked.

A single-use device for filtration of a large volume of medium including a plurality of single-use filter units, at least some of which, preferably all of which, are connected to each other by rigid pipes. The filter units include at least one prefilter and at least one main filter for virus filtration which is configured as a hollow fiber capsule.

The utility solution provides the reverse osmosis water purifier (Reverse Osmosis—RO), more specifically the RO water purifier using a module to assist in diagnosing and protecting the good status of the product to assist users to monitor the good status of the machine, assisting technicians in quickly diagnosing the location of faulty components on the system.

Filtration vessels containing multiple filtration elements, and devices and processes for detection of leaks within these filtration elements.

A method of analyzing a functional layer of an electrochemical cell or an electrochemical sensor application includes conveying a predefined amount of test gas to a first surface of the functional layer, and quantitatively determining an amount of test gas that has passed through the functional layer using a detection unit located on a second surface of the functional layer, which second surface is opposite the first surface of the functional layer, wherein the test gas conveyed to the first surface of the functional layer is provided in a test gas chamber arranged on the first surface of the functional layer, characterized in that the test gas chamber is open towards the first surface of the functional layer and has an opening which has a defined length in the longitudinal direction (X) of the functional layer and a variably adjustable width in the transverse direction (Z).

A method of reducing resource utilization for sterile filter validation includes obtaining historical datasets that each include respective values of a plurality of parameters associated with a respective sterile filtration process for a respective protein molecule, and generating, by processing the plurality of historical datasets, a PCA model. Vectors of the PCA model correspond to differently weighted combinations of the plurality of parameters, and collectively define a model space. The method also includes obtaining a target dataset that corresponds to a sterile filtration process for a target protein molecule, and includes target values of the plurality of parameters. The method also includes mapping the target values onto the model space, determining whether the mapped target values fall within a normal operating region of the model and error space, and causing sterile filter validation to be selectively bypassed or not bypassed accordingly.

A method for making a graphene membrane includes applying a suspension of graphene platelets in a fluid onto a porous substrate, and applying a pressure differential to force the fluid through the substrate to yield a filtered fluid while retaining the graphene platelets on the substrate. The graphene platelets and the substrate form the graphene membrane.

An apparatus for an extracorporeal treatment of blood has a supply line, a waste line, and an ultrafilter inserted in the supply line. An air inlet line is connected to a first chamber of the ultrafilter. A pressure sensor is configured for detecting pressure in the waste line or a second chamber of the ultrafilter. A controller is configured to perform an integrity test procedure for detecting when an ultrafilter membrane of the ultrafilter has multiple or single fiber breaks. A method of testing the ultrafilter is also disclosed.

The present disclosure relates to membranes for use in electrolysis systems. The teachings thereof may be embodied in a method for checking a membrane of an electrolyzer comprises two volumes separated by the membrane and produces two product gases from a starting liquid. The method may include: detecting an electrolysis current strength during electrolysis, measuring a liquid flow rate of the starting liquid between the two electrolyzer volumes, calculating a ratio of the measured liquid flow rate and the detected electrolysis current strength, and using the calculated ratio as an indication of membrane leaktightness.

Embodiments described herein relate to methods and systems for dewatering solutions via forward osmosis.