WCN Membrane Circles, Cellulose Nitrate, White Plain, 0,65µm, 47mm, 100/PK Recommended for most routine applications, this membrane is manufactured under strictly controlled conditions. Whatman™ nitrocellulose membranes are known for higher strength and flexibility, low extractables and narrow pore size distribution.
Standard Narrow Range, reel, 0.5 to 5.5 range, 7 mm × 5 m, pH indicators and test papers, dispenser Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. Dispensers Type SR
Ashless Clippings, 500g Whatman ashless filter aids enhance filtration speed by coagulating precipitates or suspensions to form a thick retentive “prefilter” layer on top of normal filter paper.
Reel, Potassium Iodide, 7 mm × 5 m, pH indicators and test papers, specialized test papers, dispenser reel Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. Used for detecting chlorine and other oxidizing agents. In acid solution, oxidizing agents react with the iodide in the test paper to liberate iodine. The paper will turn blue in the presence of an oxidizing agent (e.g., CI₂, Br₂, H₂O₂, HNO₂ etc.).
Grade 91 Qualitative Filter Paper Circles, 10 µm These extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin. Normal qualitative applications will not introduce any significant impurities into the filtrate. The resins do, however, contain nitrogen so these grades should not be used in Kjeldahl estimations. A general purpose creped filter for less critical routine analysis. Widely used to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration.
pH indicators and test papers, acid-alkali, Litmus blue, 10 books of 20 strips Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry.
PolyVENT Venting Filter PolyVENT are integral filter products for sterile venting of vessels and tanks. Membrane made of hydrophobic 0.2 µm PTFE membrane. Validated for 50 steam autoclave cycles; compatible with EtO. Testable by Water Break Through (WBT) test or bubble point testing. Pass USP Class VI biosafety tests for plastics. Manufactured in clean room facilities. Bidirectional and autoclavable. These devices are constructed from a single, standardized set of materials PTFE membranes and polypropylene housing to simplify the approval process.
Transfer membranes Amersham Protran Pure nitrocellulose with extreme mechanical stability - gives excellent useability. For protein transfer and DNA/RNA transfer techniques. Optimum signal/background ratio.
Grade 113V Folded Qualified Filter Paper Circles, 30 µm, 100/pk A very thick strong filter with creped surface for extremely high loading capacity in folded form. Ideal for coarse particles and gelatinous preciptates.
TurboBlotter Kit, small, Nytran SPC, 0.45 µm TurboBlotter Kit Rapid: Downward capillary transfer allows for alkaline buffer transfers in 1 h and neutral (SSC) transfers in 3 h. Economical: Reusable blotting device requires less buffer and blotting paper. Convenient refill packs available. Compact: Has a smaller footprint than most homemade devices and is stackable. Up to five units can be stacked on top of each other during transfers. Easy to use: Very easy to set up and works without power or vacuum source. Uses Whatman Nytran SPC membrane and Whatman 3MM Chr and GB003 or GB005 blotting papers for top performance. The TurboBlotter System is a rapid downward blotting device for high-resolution transfer of DNA and RNA. Rapid downward transfer system The conventional Northern/Southern transfer stack has been turned upside down in order to take advantage of gravity. No heavy weights are required on the top of the transfer stack, eliminating the messy set-up of standard upward capillary transfers. The TurboBlotter System offers greater speed, target resolution, and convenience versus traditional blotting procedures. Alkaline DNA transfers can be performed in as little as 1 h, while neutral (SSC) transfers of DNA and RNA take only 3 h. TurboBlotter is available in two sizes. The smaller model is 12 x 16 cm, for gels from 7 x 8 cm to 11 x 14 cm. The larger model is 21 x 26 cm, for gels from 12 x 21 cm to 20 x 25 cm. Each size comes in your choice of refill packs. The refill packs are available separately. Each transfer uses one sheet of Nytran SPC, one wick of 3MM Chr, and a blotter stack composed of eight sheets of 3MM Chr and twenty sheets of GB003 or GB005. Each TurboBlotter Kit or TurboBlotter refill contains five sets of these materials, enough for five transfers.
ph Indicators and test papers, Color Bonded, 0.0 to 14.0 range, 6 × 80 mm, 100 strips Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. Individual plastic support strips carry four different segments of dye-impregnated indicator papers. The resulting combination of color differences gives an extremely clear and accurate visual pH value. All the dyes are chemically bonded to the paper and cannot be leached into solution; problems associated with contamination of the sample and resultant anomalous readings are avoided. Strips Type CF
Vacuum-Type Glass Membrane Holder, stainless steel support, membrane filter accessories Membrane holder produced from borosilicate glass, suitable for aqueous and organic solvent filtration. Produced from borosilicate glass and available with a choice of support screen. Suitable for aqueous and organic solvent filtration. The funnel seal ensures that the sample does not bypass the membrane and that particulates are retained on the surface of the membrane. Vacuum type glass holders. The sintered glass support is recommended for filtration and biological analysis. The 304 stainless steel support screen is suitable for use with proteinaceous solutions.
Autovial™ 12 Syringeless Filter, with GMF prefilter, Volume 12 ml Whatman™ Autovial™ filter vials are preassembled filtration devices for removing particulates from samples. They replace syringe-coupled filtration devices with single, disposable units. Whatman™ Autovial™ devices are comprised of two parts: a graduated filter barrel and a plunger. The proven design features an integral filter, built-in air purge and a support stand that protects the recessed slip-Luer tip. They are available in a 5 mL and 12 mL volume capacity. The Whatman™ Autovial™ filter is selected according to membrane compatibility with the sample. In practice, the sample is poured into the 5 mL or 12 mL capacity filter barrel. A plunger is inserted into the barrel until the bottom is securely in place; there is a gap of air between the sample and plunger. Then, the tip of the Autovial™ is placed into the mouth of an autosampler vial or container and the plunger compressed. Filtration begins immediately. As the plunger is compressed until it reaches the bottom, the membrane is purged with air for maximum sample recovery. For direct instrument injection, a needle is placed on the Autovial™ slip-Luer outlet.
Grade 556 Drying Pad, 37 x 100 mm, 100 x 50/pack
pH Indicators and test papers, Acid-Alkali, Litmus red, Reel, 7 mm × 5 m, Dispenser Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. These easy-to-use test papers facilitate a general test for acid or alkaline reaction. The change occurs around pH 5 to 8. They are particularly recommended for educational use.
Puradisc FP 30 mm Syringe Filter, Cellulose Acetate Whatman™ Puradisc syringe filters combine premium quality with high performance. They are used for the quick, efficient filtration of samples up to 100 mL volume. Whatman™ Puradisc filters are produced from pigment-free polypropylene or polycarbonate with standard inlet (female Luer lock) and outlet (male Luer) connections (unless otherwise stated). Options include a sterile, medical grade blister pack for critical applications and a special tube tip outlet that allows the sample to be accurately dispensed into a micro-vial, removing air lock. Features: • 30 mm diameter • Larger filtration area (44% greater in comparison with 25 mm) • Designed for aqueous and non-aqueous samples
Grade 1 CHR Cellulose Chromatrography papers, different dimensions, formats and quantities
Grade 3 Qualitative Filter Papers, 6 µm, 100/pk Double the thickness of Grade 1 with still finer particle retention and excellent loading capacity; more precipitate can be held without clogging. • The extra thickness gives increased wet strength and makes this grade highly suitable for use in Büchner funnels. • The high absorbency is particularly valuable when the paper is used as a sample carrier.
Puradisc 25 mm Syringe Filter, Nylon Whatman™ Puradisc syringe filters combine premium quality with high performance. They are used for the quick, efficient filtration of samples up to 100 mL volume. Whatman™ Puradisc filters are produced from pigment-free polypropylene or polycarbonate with standard inlet (female Luer lock) and outlet (male Luer) connections (unless otherwise stated). Options include a sterile, medical grade blister pack for critical applications and a special tube tip outlet that allows the sample to be accurately dispensed into a micro-vial, removing air lock. Features: • 25 mm diameter syringe filter • Sample volume up to 100 mL • Low hold-up volumes for maximum sample recovery • Glass microfiber option available
Membrane Circles, Cellulose Acetate, WCA White Plain, Diameter 47 mm, 100/pk Whatman™ cellulose acetate membranes are made from pure cellulose acetate, making them suitable for biological and clinical analysis, sterility tests, and scintillation measurements. Cellulose acetate membrane filters exhibit very low protein binding capacity. They are hydrophilic, making them suitable for aqueous and alcoholic media.
Grade 542 Quantitative Filter Paper Circles, 2.7 µm, 100/pk High retention of fine particles under demanding conditions. Slow flow rate. Very hard and strong with excellent chemical resistance. Often used in gravimetric metal determinations. Hardened ashless filter papers are suited for a variety of precipitate sizes. Along with general filtration Grade 540, the range includes Grade 542 for retention of fine precipitates and Grade 541 for fast filtration. All three grades are designed for use in gravimetric analysis. These filter papers exhibit high wet strength and chemical resistance and are acid hardened, which reduces ash to an extremely low level. Their tough surfaces make them suitable for a wide range of critical analytical filtration operations. Each grade offers a convenient combination of filtration speed and particle retention.
Reaction Folders, Sealable Hybridization Bags, 8 × 10" Reaction folders for hybridization and incubation reactions. Whatman reaction folders are sealable bags for hybridization and incubation reactions. The folders are open on three sides to allow easier insertion of a wet membrane when compared to standard hybridization bags. The folders can be sealed with a standard heat-sealer. Available in 8 x 10 in (20.3 x 25.4 cm) size.
Polycap SPF Serum prefiltration filter Sample type • Aqueous solutions • Biologicals • Buffers • Enzymes • Nutrients • Tissue culture media • Virus suspensions Application • Serum prefiltration • Tissue culture media • Viral suspensions
Puradisc 4 mm Syringe Filter, PVDF Whatman™ Puradisc syringe filters combine premium quality with high performance. They are used for the quick, efficient filtration of samples up to 100 mL volume. Whatman™ Puradisc filters are produced from pigment-free polypropylene or polycarbonate with standard inlet (female Luer lock) and outlet (male Luer) connections (unless otherwise stated). Options include a sterile, medical grade blister pack for critical applications and a special tube tip outlet that allows the sample to be accurately dispensed into a micro-vial, removing air lock. Features: • Filtration devices – High per formance syringe filters • 4 mm diameter syringe filter • Sample volume up to 2 mL • Low hold-up volume < 10 μL ensures maximum sample recovery • Tube-tip format (optional)
WCN Membrane Circles, Cellulose Nitrate, White Plain Recommended for most routine applications, this membrane is manufactured under strictly controlled conditions. Whatman™ nitrocellulose membranes are known for higher strength and flexibility, low extractables and narrow pore size distribution.
WCN Membrane Circles, Cellulose Nitrate, White Plain Recommended for most routine applications, this membrane is manufactured under strictly controlled conditions. Whatman™ nitrocellulose membranes are known for higher strength and flexibility, low extractables and narrow pore size distribution.
Puradisc 4 mm Syringe Filter, PTFE Whatman™ Puradisc syringe filters combine premium quality with high performance. They are used for the quick, efficient filtration of samples up to 100 mL volume. Whatman™ Puradisc filters are produced from pigment-free polypropylene or polycarbonate with standard inlet (female Luer lock) and outlet (male Luer) connections (unless otherwise stated). Options include a sterile, medical grade blister pack for critical applications and a special tube tip outlet that allows the sample to be accurately dispensed into a micro-vial, removing air lock. Features: • Filtration devices – High per formance syringe filters • 4 mm diameter syringe filter • Sample volume up to 2 mL • Low hold-up volume < 10 μL ensures maximum sample recovery • Tube-tip format (optional)
Standard Narrow Range, reel, 6.4 to 8.0 range, 7 mm × 5 m, pH indicators and test papers, dispenser Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. Dispenser Type SR
UNIFILTER 384-Well- Microplate, 100 µL, GF/C UNIFILTER Microplate 384-well, 100 µl, GF/C, clear polystyrene, filter bottom with long drip director UNIFILTER 384-well microplate, dye removal No cross talk. Patented integral filter design prevents well-to-well cross contamination. Economical to use. Wide range of well volume options ensures efficient use of materials. Better control. Choice of filter media allows control of the flow rates and retention characteristics. Versatile. A broad range of filtration media is available, including glass fiber, polypropylene, cellulose nitrate, cellulose acetate, nylon, and ion exchange cellulose. This 384-well filter plate has been successfully used for DNA template clean-up, cell capture, and for the removal of unwanted debris. Proprietary Whatman UNIFILTER microplates with filter bottom wells are convenient and ready to use. Available in 24-, 96-, and 384-well formats, UNIFILTER microplates offer a choice of filter media to meet exact application requirements. The novel drip director design of Whatman UNIFILTER microplates ensures precise collection of the filtrate to allow for further processing and analysis. UNIFILTER microplates are available in a range of well volumes from 100 μl to 10 ml. Whatman Dye Terminator Removal microplates are available in 96- and 384-well formats. These plates can be used with gel filtration media for high-throughput sequencing reaction clean-up, including removal of dye blobs. Microplates are constructed from rigid polystyrene that can withstand centrifugation. Laboratory packing of gel filtration media is less expensive than prepacked plates or spin columns.
Membrane Circles, Nylon, White Plain High-quality nylon membranes are suitable for filtering aqueous solutions and most organic solvents. The membranes are suitable for use with a wide range of biological preparations and can be used where other membranes are unsuitable or difficult to use.
Integral Comparison Strip, 8.0 to 9.7 range, 11 × 100 mm, pH indicators and test papers Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. Each test strip has a central segment of indicator dye and, printed alongside, eight or more different color segments marked with corresponding pH values for matching purposes. The pH test value can be read off by direct comparison of the test strip color and the color bars. Well suited for colored solutions, when any changes in color of the paper stock are automatically cancelled out. Strips Type CS
UNIFILTER Microplate, 96-well, 800 µl, GF/C, clear polystyrene, filter bottom with long drip director UNIFILTER 96-well microplate, dye removal, no cross talk. Patented integral filter design prevents well-to-well cross contamination. Economical to use. Wide range of well volume options ensures efficient use of materials. Better control. Choice of filter media allows control of the flow rates and retention characteristics. Versatile. A broad range of filtration media is available, including glass fiber, polypropylene, cellulose nitrate, cellulose acetate, nylon, and ion exchange cellulose. The 800 µl UNIFILTER microplate is most typically used in purifications, isolations, and separations of biomolecules, particularly DNA. The microplate has a well volume of 800 μl, which is excellent for standard DNA plasmid miniprep chemistries. The choice of short or long drip directors is application-specific. UNIFILTER 800 μl is constructed from rigid high-grade polystyrene. Proprietary Whatman UNIFILTER microplates with filter bottom wells are convenient and ready to use. Available in 24-, 96-, and 384-well formats, UNIFILTER microplates offer a choice of filter media to meet exact application requirements. Whatman Dye Terminator Removal microplates are available in 96- and 384-well formats. These plates can be used with gel filtration media for high-throughput sequencing reaction clean-up, including removal of dye blobs. Microplates are constructed from rigid polystyrene that can withstand centrifugation. Laboratory packing of gel filtration media is less expensive than prepacked plates or spin columns.
Cellulose Extraction thimbles are produced from high-quality alpha cellulose cotton linter and have excellent mechanical strength and retention. The high purity of the materials ensures reliable and reproducible analytical results (25/pk)
Grade 181 Seed Testing Paper, Circle, 90 mm, 100/pk Grade 181 Seed testing circles provide reliable and reproducible results due to their extremely high purity. The papers are made from pure cellulose without any additives and do not contain any substances that could influence the growth of the seeds. The constant water absorption of the papers ensures the continuous provision of the required amount of water. The better contrast of the color seed testing papers makes evaluation easier, particularly for seeds with fine white rootlets or under artificial light. This makes work easier, improves the results, and saves time. The dyes being used have been thoroughly investigated and have no influence on the growth of the seeds.
GD/XP 25 Syringe Filter, 0,45 µm, 25 mm Whatman™ GD/XP disposable syringe filters are suitable for use with samples that require inorganic ion analysis, as levels of ion extractables are minimized. They are also an alternative choice for users requiring a filter that exhibits extremely low protein binding characteristics. GD/XP syringe filters contain a two-layer prefilter stack comprised of 20 μm and 5 μm polypropylene filters. The last stage of filtration is by membrane, which is positioned below the prefilter stack.
Integral Comparison Strip, 1.8 to 3.8 range, 11 × 100 mm, pH indicators and test papers Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. Each test strip has a central segment of indicator dye and, printed alongside, eight or more different color segments marked with corresponding pH values for matching purposes. The pH test value can be read off by direct comparison of the test strip color and the color bars. Well suited for colored solutions, when any changes in color of the paper stock are automatically cancelled out. Strips Type CS
High-purity glass microfiber thimbles manufactured from 100% pure borosilicate glass are available for specialized applications. The thimbles are completely free of binders or additives and can be used at temperatures up to 500°C or when using solvents that are incompatible with cellulose thimbles. These thimbles are also used in pollution monitoring techniques (0.8 μm nominal particle retention). Typical thickness 1.7 mm. (25/pk)
UNIFILTER Microplate, 96-well, 800 µl, GF/B, clear polystyrene UNIFILTER 96-well microplate, 800 µl, long drip director No cross talk. Patented integral filter design prevents well-to-well cross contamination. Economical to use. Wide range of well volume options ensures efficient use of materials. Better control. Choice of filter media allows control of the flow rates and retention characteristics. Versatile. A broad range of filtration media is available, including glass fiber, polypropylene, cellulose nitrate, cellulose acetate, nylon, and ion exchange cellulose. The 800 µl UNIFILTER microplate is most typically used in purifications, isolations, and separations of biomolecules, particularly DNA. The microplate has a well volume of 800 μl, which is excellent for standard DNA plasmid miniprep chemistries. The choice of short or long drip directors is application-specific. UNIFILTER 800 μl is constructed from rigid high-grade polystyrene. Proprietary Whatman UNIFILTER microplates with filter bottom wells are convenient and ready to use. Available in 24-, 96-, and 384-well formats, UNIFILTER microplates offer a choice of filter media to meet exact application requirements. The novel drip director design of Whatman UNIFILTER microplates ensures precise collection of the filtrate to allow for further processing and analysis. UNIFILTER microplates are available in a range of well volumes from 100 μl to 10 ml.
pH indicators and test papers, acid-alkali, Litmus red, 10 books of 20 strips Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry.
TurboBlotter Refill, small, Nytran SPC, 0.45 µm TurboBlotter refill Rapid: Downward capillary transfer allows for alkaline buffer transfers in 1 h and neutral (SSC) transfers in 3 h. Economical: Reusable blotting device requires less buffer and blotting paper. Compact: Has a smaller footprint than most homemade devices and is stackable. Up to five units can be stacked on top of each other during transfers. Easy to use: Very easy to set up and works without power or vacuum source. Uses Whatman Nytran SPC membrane and Whatman 3MM Chr and GB003 or GB005 blotting papers for top performance. The TurboBlotter System is a rapid downward blotting device for high- resolution transfer of DNA and RNA. Rapid downward transfer system. The conventional Northern/Southern transfer stack has been turned upside down in order to take advantage of gravity. No heavy weights are required on the top of the transfer stack, eliminating the messy set-up of standard upward capillary transfers. The TurboBlotter System offers greater speed, target resolution, and convenience versus traditional blotting procedures. Alkaline DNA transfers can be performed in as little as 1 h, while neutral (SSC) transfers of DNA and RNA take only 3 h. TurboBlotter is available in two sizes. The smaller model is 12 x 16 cm, for gels from 7 x 8 cm to 11 x 14 cm. The larger model is 21 x 26 cm, for gels from 12 x 21 cm to 20 x 25 cm. Each transfer uses one sheet of Nytran SPC, one wick of 3MM Chr, and a blotter stack composed of eight sheets of 3MM Chr and twenty sheets of GB003 or GB005. Each TurboBlotter Kit or TurboBlotter refill contains five sets of these materials, enough for five transfers.
Benchkote™ Plus Surface Protector. Benchkote™ Plus is a thicker, more absorbent material for more demanding applications and can absorb in excess of 0.75 liters of water per square meter.
Integral Comparison Strip, 1.0 to 12.0 range, 11 × 100 mm, pH indicators and test papers, 200 strips Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. Each test strip has a central segment of indicator dye and, printed alongside, eight or more different color segments marked with corresponding pH values for matching purposes. The pH test value can be read off by direct comparison of the test strip color and the color bars. Well suited for colored solutions, when any changes in color of the paper stock are automatically cancelled out. Strips Type CS
Grade 202 Qualitative Filter Paper Circles, 15 - 19 µm, 100/pk A general qualitative filter with creped surface. Faster than grade 201 and retain large crystalline coarse particles. Widely used in industrial laboratories and students laboratories for routine filtration. Filters coarse particles.The filter is wet-strengthened with a small amount of chemically stable resin to extend the life of the filter and improve handling. Normal qualitative applications will not introduce any significant impurities into the filtrate. However it is not recommended for Kjeldahl nitrogen analysis.
Standard Narrow Range, reel, 8.0 to 10.0 range, 7 mm × 5 m, pH indicators and test papers, dispenser Instant pH readings. Accurate for a wide range of routine pH testing. Inexpensive. Convenient and portable for field use. GE Healthcare offers a range of pH indicator and test papers to meet specific needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. The convenience of using indicator papers for the rapid determination of pH values has led to many applications in laboratories and in industry. Dispensers Type SR
WCN Membrane Circles, Cellulose Nitrate, White Plain Recommended for most routine applications, this membrane is manufactured under strictly controlled conditions. Whatman™ nitrocellulose membranes are known for higher strength and flexibility, low extractables and narrow pore size distribution.
UNIFILTER Microplate, 96-well, 2 ml, GF/C, filter bottom with long drip director The 2 ml UNIFILTER microplate is widely used for applications that require larger sample or reagent volumes. Typically these applications include biomolecule purification by solid phase extraction and organic synthesis in combinatorial chemistry library generation. No cross talk. Patented integral filter design prevents well-to-well cross contamination. Economical to use. Wide range of well volume options ensures efficient use of materials. Better control. Choice of filter media allows control of the flow rates and retention characteristics. Versatile: A broad range of filtration media is available, including glass fiber, polypropylene, cellulose nitrate, cellulose acetate, nylon, and ion exchange cellulose. The glass-filled polypropylene construction of the 2 ml UNIFILTER microplate permits chemical- and heat-resistant operation. The long drip directors facilitate collection of filtrate with no cross talk. Two filter media for the 2 ml chemically resistant filter plate are PKP and GF/D. Both are chemically resistant with the PKP used for retaining solvent, while the GF/D is used for fast flow rates. Proprietary Whatman UNIFILTER microplates with filter bottom wells are convenient and ready to use. Available in 24-, 96-, and 384-well formats, UNIFILTER microplates offer a choice of filter media to meet exact application requirements. The novel drip director design of Whatman UNIFILTER microplates ensures precise collection of the filtrate to allow for further processing and analysis. UNIFILTER microplates are available in a range of well volumes from 100 μl to 10 ml.
UNIFILTER Microplate, 96-well, 800 µl, 0.45 µm cellulose acetate, clear polystyrene UNIFILTER 96-well microplate, 800 µl, long drip director, no cross talk. Patented integral filter design prevents well-to-well cross contamination. Economical to use. Wide range of well volume options ensures efficient use of materials. Better control. Choice of filter media allows control of the flow rates and retention characteristics. Versatile. A broad range of filtration media is available, including glass fiber, polypropylene, cellulose nitrate, cellulose acetate, nylon, and ion exchange cellulose. The 800 µl UNIFILTER microplate is most typically used in purifications, isolations, and separations of biomolecules, particularly DNA. The microplate has a well volume of 800 μl, which is excellent for standard DNA plasmid miniprep chemistries. The choice of short or long drip directors is application-specific. UNIFILTER 800 μl is constructed from rigid high-grade polystyrene. Proprietary Whatman UNIFILTER microplates with filter bottom wells are convenient and ready to use. Available in 24-, 96-, and 384-well formats, UNIFILTER microplates offer a choice of filter media to meet exact application requirements. The novel drip director design of Whatman UNIFILTER microplates ensures precise collection of the filtrate to allow for further processing and analysis. UNIFILTER microplates are available in a range of well volumes from 100 μl to 10 ml.
Filter Funnel Plate, polypropylene, 90 mm Polypropylene Plate: Optional extra. Recommended for most acids (except concentrated nitric acid and fuming sulfuric acid) at room temperatures. Suitable also for most alcohols, glycols, ethers, and ketones. Maximum working temperature 100°C.
UNIFILTER Microplate, 96-well, 800 µl, DNA binding, clear polystyrene UNIFILTER 96-well microplate, 800 µl, long drip director, no cross talk. Patented integral filter design prevents well-to-well cross contamination. Economical to use. Wide range of well volume options ensures efficient use of materials. Better control. Choice of filter media allows control of the flow rates and retention characteristics. Versatile. A broad range of filtration media is available, including glass fiber, polypropylene, cellulose nitrate, cellulose acetate, nylon, and ion exchange cellulose. DNA recovery of 6 μg per well on average. Consistent yield across all 96 wells Eluted plasmid DNA is free of genomic DNA contamination when used with Lysate Clarification UNIFILTER. High-quality DNA suitable for PCR, restriction digestion, and sequencing. Save time: No desalting or ethanol precipitation. No kit required; significantly reduces costs. The 800 µl UNIFILTER microplate is most typically used in purifications, isolations, and separations of biomolecules, particularly DNA. The microplate has a well volume of 800 μl, which is excellent for standard DNA plasmid miniprep chemistries. The choice of short or long drip directors is application-specific. UNIFILTER 800 μl is constructed from rigid high-grade polystyrene. Proprietary Whatman UNIFILTER microplates with filter bottom wells are convenient and ready to use. Available in 24-, 96-, and 384-well formats, UNIFILTER microplates offer a choice of filter media to meet exact application requirements. The novel drip director design of Whatman UNIFILTER microplates ensures precise collection of the filtrate to allow for further processing and analysis. UNIFILTER microplates are available in a range of well volumes from 100 μl to 10 ml. Plasmid DNA Binding UNIFILTER works either as a stand-alone or as part of our high-throughput miniprep system. Plasmid DNA is bound to the filter under chaotropic conditions, washed twice, and then vacuumed to dryness on a vacuum manifold. The plasmid DNA is eluted by vacuum in a final volume of 100 μl into a nonbinding polypropylene collection plate using water or TE-¹ buffer. The DNA is ready to use and further ethanol precipitation is unnecessary. The final concentration is 50 to 100 ng/μl, depending on the original culture. The A<sub>260/280</sub> ratio is 1.9 and the yields in all 96 wells “max out” at 6 μg. The Plasmid DNA binding plate can be used with both vacuum and centrifuge techniques, making it a vital and flexible tool in every high-throughput laboratory.
UNIPLATE Collection and Analysis Microplate, 24-well, 10 ml, natural polypropylene, round well bottom UNIPLATE microplates widest selection from a single source: Choice of well volumes ranging from 80 µl to 10 ml, well densities from 24 to 384 wells with round or 'V' bottom for maximum recovery. Chemical compatibility: Available in chemically resistant polymers capable of withstanding low temperatures for long-term storage. Opaque plates prevent optical cross talk in light emitting assays. Conforms to ANSI/SBS microplate standard. Guaranteed for use with robotic handlers and centrifuge carriers. Whatman offers a wide range of UNIPLATE microplates including various well profiles, well volumes, and well densities, in diverse polymer materials. Most UNIPLATE microplates conform to the ANSI/SBS microplate standard and fit most microplate readers and automated plate handling devices. Whatman UNIPLATE microplates are suitable for a wide range of applications, including simple filtrate collection, when used in conjunction with our UNIFILTER microplates, as well as homogeneous assay techniques utilized in high-throughput screening (HTS).
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