What is track-etched membrane?

What is track-etched membrane?

Track-etched membranes feature a unique pore structure that offers the smallest tolerances regarding pore sizes and pore density on the market. The unique two-step process allows Oxyphen to target specific customer requirements regarding pore size and density that affect air flow and water entry pressure.

What is polycarbonate membrane?

polycarbonate membranes are true pore size microporous membranes featuring the sharp cut-off and reproducible microfiltration characteristics of track-etched membrane filters. Cytiva business offers a variety of Whatman PCTE membrane filters for gravimetric analyses.

What is polycarbonate membrane filter?

Polycarbonate Track Etch (PCTE) membranes are made from a thin, microporous polycarbonate film material. It is ideally suited for use in blood assays and high-purity and general filtration.

What is the advantage of track etching?

Track-etch membranes offer distinct advantages over conventional membranes due to their precisely determined structure. Their pore size, shape and density can be varied in a controllable manner so that a membrane with the required transport and retention characteristics can be produced.

What is track etch?

Chemical etching is a process of pore formation. During chemical etching the damaged zone of a latent track is removed and transformed into a hollow channel (Fleischer 1964, Fleischer 1975). It is the pore-size-determining and pore-shape-determining stage of the technology.

What is PC membrane?

PC membranes have a smooth flat surface and exhibit very low levels of extractable. They have sharply defined pore sizes, high flow rates, and excellent chemical and thermal resistance. They are suitable for the detection of particles in many corrosive fluids because of this broad chemical compatibility.

What is the pervaporation preferred?

When is the pervaporation preferred? Explanation: Pervaporation is preferred when the feed solution is dilute in main permeant. If the solution is rich in permeant then more number of membrane stages may be required.

What type of membrane filter is made from a thin polycarbonate film that is treated with radiation and then etched with a chemical to yield very uniform holes?

Nuclepore track-etched polycarbonate membranes were manufactured from thin polycarbonate film irradiated with neutron-induced uranium fission products. The major step in the advancement of track-etched technology was achieved around 1970 because of the developments in heavy ion accelerator technology.

Why damaged path are formed in track etch detectors?

When a charged particle slows down and stops in a solid, the energy that it deposits along its track can cause permanent damage in the material. Because the density of damage correlates with the dE/dx of the particle, it is highest for the heaviest charged particles. …

What is pervaporation used for?

Pervaporation (or pervaporative separation) is a processing method for the separation of mixtures of liquids by partial vaporization through a non-porous or porous membrane.

How does the pervaporation work?

In the pervaporation process a liquid feed stream is first pre-heated to operating temperature and then routed to a membrane module. The permeate transported through the membrane is vapourised on the permeate side of the membrane and heat is dissipated from the feed.

What are the different types of radiation detectors?

When talking about radiation detection instruments, there are three types of detectors that are most commonly used, depending on the specific needs of the device. These are: Gas-Filled Detectors, Scintillators, and Solid State detectors.

What makes A nuclepore track etched polycarbonate membrane so good?

Nuclepore Track-Etched Polycarbonate (Hydrophilic) Membranes. Nuclepore track-etched polycarbonate membranes are manufactured from high-quality polycarbonate film and have sharply defined pore sizes, high flow rates, and excellent chemical and thermal resistance. The membranes have a smooth flat surface and exhibit very low levels of extractables.

Which is the best filter for polycarbonate track etch?

A. Sterlitech Polycarbonate Track Etch (PCTE) and Polyester Track Etch (PETE) filters offer the lowest, non-specific binding of any filter membrane.

What kind of filter membrane is sterlitech track etch?

Sterlitech Track Etch filter membranes are manufactured and produced under class 100 condition during critical manufacturing steps. Therefore, the membrane is free of contaminants and pyrogens. Sterlitech PCTE and PETE membranes offer very low extractables.

What can I use to dissolve a track etch membrane?

The polyester track-etch (PETE) membrane filters can be dissolved with m-Cresol, o-Chlorophenol, hexafluoroisopropanol, and trifluoroacetic acid (TFA). Both types of track-etch membranes can be dissolved with elevated temperature sodium hydroxide solutions.