Whatman 25mm wide .45um Syringe Filter.

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Membrane	Specification
MCE	For Hydrophilic, Strong chemical resistance, Low protein attachment. Suitable for protein rich solution
Nylon	Good chemical tolerance Can be used in pH raging 1-12 Filtration and fertilization of biological product, Solution for tissue culture.
PVDF	Suitable for water and various organic solutions. Resistance to heat and oxidation. To prevent from damage of particles to column, Suitable for sample preparation in HPLC, GC.
PES	Low protein attachment, High speed of fluid throw wide pH range, good chemical tolerance suitable for pre-filtration, Purify and filtration of buffers,culture solution and solution containing particles.
PTFE	Good chemical tolerance Can be used in pH raging 1-12 Excellent for air and gas filtration, and for venting applications.