It is important to choose a filtration membrane that has high chemical compatibility with the mobile phase solvents used in the lab. Polytetrafluoroethylene (PTFE), polyvinylidene difluoride (PVDF), and regenerated cellulose (RC) membranes are popular choices, because they are highly compatible with common mobile phase solvents such as purified water, acetonitrile, and methanol.
of membrane filters, Pall offers more types of membranes for quality control testing than any other company. Our patented GH Polypro (GHP) membrane, with its uniquely broad solvent compatibility, is globally recognized as the universal membrane for HPLC
The chemical stability and inertness of the PTFE membrane make it suitable for corrosive organic solvents, strong acids, and strong bases. PTFE membrane is also very suitable for HPLC sample preparation. Its natural hydrophobicity is also very suitable for air
Standard 2: Standard created by dissolving pure compound in the solvent mixture followed by filtration using various Millex® syringe filters with 5 mL filtrate discarded prior to HPLC (filtered). Standard 3: Using blend uniformity sample dissolved in the solvent mixture and centrifuging prior to HPLC analysis (centrifuged sample).
Descriptions. Hydrophilic PES membrane consists of pure polyether sulfone polymers without support. It can provide good mechanical strength, thermal stability and broad chemical compatibility. It’s applicable for pure water filtration, particles removal of HPLC aqueous mobile phase, preventing column clogging.
Compatibility of materials used to fabricate Millipore ® membranes and filtration devices. HDPE = High-density polyethylene; PP= Polypropylene; PS = Polystyrene; PVC = Polyvinyl chloride; MMA = Modified acrylic copolymer; ABS = Acrylonitrile-butadiene-styrene copolymer; SAN = Styrene-acrylonitrile polymer; PC = Polycarbonate; PET = Polyethylene
polypropylene (PP) or polytetrafluoroethylene (PTFE) filters should be used. • For mixtures of organic and aqueous samples, PTFE, PP, nylon, regenerated cellulose (RC), and PES filters can be used, according to the percentage of aqueous/organic solvent.
2017/7/11 · Investigation of appropriate experimental conditions of EA-SS-LPME: A. Effect of pH (MFFK-0.25 membrane (10 × 10 mm); sample volume – 2.5 mL; citrate-phosphate buffer solution (pH 4.9) volume – 0.5 mL; C(FQs) = 100 μg L −1; time of extraction and backB.
use for your sample preparation. The RC membrane is broadly compatible wit h common HPLC sample solvents and mobile phases. Improve e ciency with ready-to-use products RC products are supplied r eady for use. The hydrophilic, low-protein binding RC
of membrane filters, Pall offers more types of membranes for quality control testing than any other company. Our patented GH Polypro (GHP) membrane, with its uniquely broad solvent compatibility, is globally recognized as the universal membrane for HPLC
The RC membrane is broadly compatible with common HPLC sample solvents and mobile phases. Improve efficiency with ready-to-use products – RC products are supplied ready for use. The hydrophilic, low-protein binding RC membrane is suitable for a wide variety of HPLC applications.
Hydrophilic PTFE membrane pore size is 0.22μm, 0.45μm and chemical compatibilities are superior to aqueous, organic solvents and mixed solvents. Hydrophilic PTFE membrane is the strongest membrane filter for strong acid, alcohol, and so on.
