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PES Membrane filters, non-sterile
Very suitable for culture media assays. Membrane made of Polyethersulfone (PES), inherently hydrophilic. Fast filtration speed. Membrane mechanically very strong and resistant to an extensive range of aqueous solvents. Low protein binding
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CN and CE membrane filters, non-sterile
Plain white membranes available in cellulose nitrate (CN) and cellulose acetate (CA)
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CN membrane filters, sterile
White cellulose nitrate membranes (CN) with black grid for microbiology applications. Sterile, individual packaging
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Glass microfiber filter, grade GFFA (1,6 μm)
Paper made from glass microfiber 100% borosilicate without binder. Very fast filtration with a high retention and capacity of fine particles . For general use in laboratory. Can be used at very high temperature. Surface weight 37 g/m², pore 1,6 μm, thickness 190 μm. Available in flat disks. Equivalent to: Whatman GF/A, Macherey Nagel GF-1, S&S GF50
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Microfiber glass paper filter, grade GFFC (1,2 μm)
Paper made from 100% borosilicate glass microfiber without binder. Fast filtration with a retention of fine particles. Standard filter for determination of Total Suspended Solids (TSS) in drinking or sewage water according to European standards (EN 872) and American standards ( Standard Methods 2540D). Can be used at very high temperatures. Surface weight 55 g/m², pore 1,2 μm, thickness 270 μm. Available in flat disks. Equivalent to: Whatman GF/C, Macherey Nagel GF-3, Millipore AP40, S and S GF52
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Activated carbon paper filter
Activated carbon paper used to dispose benzene, toluene, xylene, ethylbenzene or other small organic molecules. Commonly used in water filtration and odor removal. Available in flat disks
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PRAT DUMAS qualitative filter paper for general use, medium flow rate
Maximum ash content 0.10%. Vellum paper used for general laboratory filtration. Surface weight 65 g/m², pore 7 -10 μm, thickness 170 μm. Available in flat disks (packed in foiled bags of 100 disks, with no carton box), or folded (in a carton box). Equivalent to: Whatman 93
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PRAT DUMAS qualitative filter paper for general use, very fast flow rate
Maximum ash content 0.06%. Paper consisted of long cotton fibers for thick and sticky liquids filtration. Thick and very resistant paper, offering the fastest flow among qualitative filters. Surface weight 130 g/m², pore 25 - 30 μm, thickness 430 μm. Available in flat disks and folded. Equivalent to: Whatman 114
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PRAT DUMAS Qualitative filter paper, low ash, slow flow rate
Low ash content paper (max 0.06%) used for fine filtration of small particles precipitates. Surface weight 100 g/m², pore 2 - 3 μm, thickness 200 μm. Available in flat disks and folded. Equivalent to: Whatman 5
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PRAT DUMAS Qualitative filter paper, low ash, medium flow rate
Superior Vellum paper made of pure cellulose and low ash (max 0.06%). General use in laboratory. Surface weight 85 g/m², pore 10 - 12 μm, thickness 200 μm. Available in flat disks and folded. Equivalent to: Whatman 1
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PRAT DUMAS Qualitative filter paper, low ash, fast flow rate
Low ash paper (max 0.06%) made of cotton fibers, used for thick and sticky liquids filtration. Surface weight 85 g/m², pore 10 - 12 μm, thickness 200 μm. Available in flat disks and folded. Equivalent to: Whatman 4
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PRAT DUMAS ashless quantitative filter paper, fast flow rate
Ash-free paper (max 0.002%) made exclusively of cellulose cotton fibers. Its quick flow rate makes it recommendable for large precipitates, such as iron hydroxide and other metal sulfates. Surface weight 80 g/m², pore 12 - 16 μm, thickness 250 μm. Available in flat disks. Equivalent to: Whatman 41
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