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Precolumn Filters and Frits

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Precolumn Filters and Frits

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.


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Description:   Microfilter, .045 inch disc diameter x .031 inch thick x 192 inch total diameter, PEEK*
Catalog Number: 53501-360
Supplier: Upchurch Scientific



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Description:   HPLC Frit 1/4 inch, Internal Diameter: 3.2 mm, Porosity: 0.5 um, chromatographic-grade 316 stainless steel, to fit most column and pore sizes
Catalog Number: 10853-620
Supplier: Restek



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Description:   Frit Replacement, 1/4"
Catalog Number: 10059-356
Supplier: Restek



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Description:   Diba Chromatography Column Frit, 15 mm dia, 25 µm, PE
Catalog Number: 76176-006
Supplier: Argos Technologies



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Description:   Diba Chromatography Column Frit, 35 mm dia, 5 µm, PTFE
Catalog Number: 76176-024
Supplier: Argos Technologies



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Description:   Diba Chromatography Column Frit, 35 mm dia, 20 µm, PTFE
Catalog Number: 76176-028
Supplier: Argos Technologies



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Description:   UltraShield UHPLC PreColumn Filter, Porosity: 0.5 um frit, Inlet/Outlet: Female/Male 10-32, Universal fit, Pressure: 15,000 psi, Filter: 0.5 um or 0.2 um titanium frit in a stainless steel body with PEEK ferrule, Wrench Flat: 5/16 inch, Cost-effective protection
Catalog Number: 10853-742
Supplier: Restek



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Description:   With five 0.5um PEEK* Frits, Use with .025 OD MicroTight* Sleeves
Catalog Number: 53501-364
Supplier: Upchurch Scientific



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Description:   0.5 micron,5 Per Pack.
Catalog Number: 97004-010
Supplier: Optimize



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Description:   Diba Chromatography Column Frit, 5 mm dia, 50 µm, PTFE
Catalog Number: 76176-366
Supplier: Argos Technologies



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Description:   Diba Chromatography Column Frit, 6.6 mm dia, 5 µm, PTFE
Catalog Number: 76176-368
Supplier: Argos Technologies



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Description:   Diba Chromatography Column Frit, 25 mm dia, 50 µm, PTFE
Catalog Number: 76176-022
Supplier: Argos Technologies



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Description:   .46 inch disc diameter x .071 inch thick x .560 inch total diameter, PEEK*
Catalog Number: 35321-094
Supplier: Upchurch Scientific



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Description:   Frit, Disc Diameter (in): 0.062, Disc Thickness (in): 0.065, Ring OD (in): 0.2485, Porosity: 0.5um, Material: Stainless Steel, designed specifically to work well throughout HPLC systems, to deliver excellent uniform porosity and a long filtration life
Catalog Number: 21511-427
Supplier: Upchurch Scientific



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Description:   .062 inch disc diameter x .065 inch thick x .250 inch total diameter, PEEK*
Catalog Number: 21511-458
Supplier: Upchurch Scientific



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Description:   For 1/16 inch OD tubing, Kel-F* (PCTFE), Green
Catalog Number: 53521-016
Supplier: Upchurch Scientific



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