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Q-Max® 4 syringe filters are recommended for smaller sample sizes due to a low loss of sample inside the filter housing. Autoclavable. Available in two pore sizes (0.22 µm and 0.45 µm) and six membrane types: Cellulose Acetate (CA): Hydrophilic and low protein binding membrane. Also resistant against some alcohols. Nylon: Naturally hydrophilic with wide solvent resistance. Also suitable for aqueous samples with pH range 3-10. Binds proteins. Polyethersulphone (PES): Hydrophilic and low binding of proteins. Resists pH 1-4. PVDF: Hydrophobic membrane type. For solvent filtration. Also resistant against acids. PTFE: Hydrophobic membrane. Resistant against solvents, acids and bases. Not recommended for aqueous samples. PTFE/L: Hydrophilic membrane type. Very versatile. Can be used for water filtration as well as solvents, acids and bases. |Specifications|| |:----|:----:| |Housing material|Polypropylene| |Filtration area (cm2)|0.125| |Hold-up volume (µl)|<5| |Max. pressure (bar)|6| |Recommended volume (ml)|<1| |Connections (in-/outlet)|Female luer lock/Male luer|