Very thick and absorbent cotton fiber used to determine the suitable antibiotic for a particular infection treatment. Surface weight 420 g/m². Available in flat disks
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
Hydrophobic paper for the fast separation of aqueous solutions from hydrofuge solvents. Useful with organic solvents heavier or lighter than water. Replaces separatory funnels in many applications. Available in flat disks. Equivalent: Whatman 1 PS
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 ?m, thickness 190 ?m. Available in flat disks. Equivalent to: Whatman GF/A, Macherey Nagel GF-1, S&S GF50
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 ?m, thickness 270 ?m. Available in flat disks. Equivalent to: Whatman GF/C, Macherey Nagel GF-3, Millipore AP40, S and S GF52
Hardened low ash paper (max 0.02%), as an intermediate solution between quantatitive ash free paper (max 0.002%) and qualitative paper low ash (max 0.06%) for non critical quantitative works. Its flow rate makes it suitable for large precipitates, such as iron hydroxide and other metal sulfides. High wet resistance. Surface weight 80 g/m², pore 12 – 16 μm, thickness 250 μm. Available in flat disks (foiled bags of 100 disks, with no carton box), or folded (in a carton box). Equivalent to: Whatman 54
Hardened low ash paper (max 0.02%), as an intermediate solution between quantatitive ash free paper (max 0.002%) and qualitative paper low ash (max 0.06%) for non critical quantitative works. Medium flow rate is the adequate for a general use, being the intermediate filter in terms of flow rate and retention. High wet resistance. Surface weight 80 g/m², pore 8 – 12 μm, thickness 270 μm. Available in flat disks (foiled bags of 100 disks, with no carton box), or folded (in a carton box). Equivalent to: Whatman 52
Hardened low ash paper (max 0.02%), as an intermediate solution between quantatitive ash free paper (max 0.002%) and qualitative paper low ash (max 0.06%) for non critical quantitative works. Recommended for thin precipitates, such as barium, lead, zinc or nickel sulfate, barium fluoride or barium hydroxide. High wet resistance. Surface weight 80 g/m², pore 7 – 9 μm, thickness 290 μm. Available in flat disks (foiled bags of 100 disks, with no carton box), or folded (in a carton box). Equivalent to: Whatman 50
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 10 – 15 ?m, thickness 250 ?m. Available in flat disks. Equivalent to: Whatman 43
Ash-free paper (max 0.002%) made exclusively of cellulose cotton fibers. Used for routine gravimetrical analysis. Intermediate filter in terms of flow rate and retention. Surface weight 80 g/m², pore 8 – 12 μm, thickness 270 μm. Available in flat disks. Equivalent to: Whatman 40
Ash-free paper (max 0.002%) made exclusively of cellulose cotton fibers. Used for critical gravimetrical analysis. Surface weight 80 g/m², pore 7 – 9 μm, thickness 290 μm. Available in flat disks. Equivalent to: Whatman 42
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
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
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
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
