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.
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