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Precolumn filters are essential for protecting HPLC columns against particulate matter which can accumulate on the column frit, leading to split peaks and high backpressure. Sources of particles include mobile phases (especially when buffers are mixed with organic solvents), leaking pump and injector seals, and samples. Precolumn filters are also useful because changing the column frit is extremely difficult to do without disturbing the column packing, whereas changing the precolumn filter’s frit is easy, providing relatively inexpensive insurance against column damage.
Precolumn MicroFilters, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Precolumn MicroFilters are specifically designed to directly connect into microbore or analytical columns.
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Frits, stainless steel, Unidense type
Supplier: VICI JOUR RESEARCH
Frits made of stainless steel with extra-low carbon content.
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Stainless steel frits
Supplier: UPCHURCH SCIENTIFIC
Upchurch Scientific®, C-425 frit, Porozita: 0,5 µm, Tloušťka: 0,71 mm, Vně. Ø frity: 1,0 mm, Objem frity: 0,1 µl, Materiál frity: Nerezová ocel, Vně. Ø kroužků: 4,87 mm, Materiál kroužku: PCTFE
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Precolumn filters, high pressure
Supplier: VICI JOUR RESEARCH
Precolumn filter kit has a standard 10 to 32 fitting and fits direct to most column types without introducing an additional dead volume.
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Supplier: EPPENDORF
Supplier: Integra
Supplier: Liebherr
Supplier: OZ BIOSCIENCES
Supplier: VWR Collection
Supplier: Corning
Supplier: SenseAnywhere
Supplier: Integra
Supplier: NANOENTEK
Supplier: VWR Collection
Supplier: Integra
Supplier: Testo
Supplier: Sartorius
Supplier: Quantabio