A polymer composition for producing gel extruded articles is described. The polymer composition contains at least three different polyethylene polymers, namely a lower molecular weight polyethylene polymer, a mid-range molecular weight polyethylene polymer, and a high molecular weight polyethylene polymer. Combining the different polyethylene polymers in different ratios can optimize not only mechanical properties but improve processing.

Disclosed herein are compositions for permeable outer diffusion control membranes for creatinine and creatine sensors and methods of making such membranes.

Disclosed is a urea biosensor that is stable at ambient temperature, and methods of making thereof.

Disclosed are multi-enzyme biosensors that are stable at ambient temperature, and methods of making thereof.

The disclosure relates to electrochemical sensors for measuring creatinine and creatine in a patient's blood. More particularly, the disclosure relates to compositions and methods for improving measurement accuracy of electrochemical sensors used for measuring creatinine and creatine.

Disclosed are multi-enzyme biosensors that are stable at ambient temperature, and methods of making thereof.

The present disclosure provides a substrate for a liquid filter, including: a polyolefin microporous membrane, in which a mean flow pore size in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to gas-liquid phase substitution is from 1 nm to 50 nm, a calcium content in the polyolefin microporous membrane is 2,000 ppb or less, and a ratio of a tensile elongation in a longitudinal direction (MD) to a tensile elongation in a width direction (TD) perpendicular to the longitudinal direction (MD/TD tensile elongation ratio) of the polyolefin microporous membrane is from 0.47 to less than 0.96 or from more than 1.25 to 7.

A substrate for a composite membrane includes a microporous polyolefin membrane for carrying a hydrophilic resin compound within the pores of the microporous membrane wherein: the average pore diameter is 1 nm to 50 nm; the porosity is 50% to 78%; the membrane thickness is 1 μm to 12 μm; and, when a mixed solution of ethanol and water (volume ratio ½) is dripped onto a surface of the microporous polyolefin membrane which has not undergone hydrophilization treatment, the contact angle θ1 between the droplet and the surface is 0 to 90 degrees 1 second after the dripping, and the contact angle θ2 between the droplet and the surface is 0 to 70 degrees 10 minutes after the dripping, and the rate of change of the contact angle ((θ1−θ2)/θ1×100) is 10 to 50%.

A method of removing chemical contaminants from a composition comprising an active, a solvent, and a contaminant can include providing an initial feed supply, wherein the initial feed supply comprises the active, the solvent, and the contaminant, wherein the contaminant can include 1,4 dioxane, dimethyl dioxane, or a combination thereof; including filtering the initial feed stock through a nanofilter.

A method of removing chemical contaminants from a composition comprising an active, a solvent, and a contaminant can include providing an initial feed supply, wherein the initial feed supply comprises the active, the solvent, and the contaminant, wherein the contaminant can include 1,4 dioxane, dimethyl dioxane, or a combination thereof; including filtering the initial feed stock through a nanofilter and using reverse osmosis.