HPLC Guard Columns and Cartridges
Waters Corp Spherisorb Silica Guard Cartridge, 80Å, 5 µm, 4.6 mm X 30 mm, 3/pk
The Spherisorb silica chemistry is general purpose unbonded silica substrate designed for normal phase applications.
Showa Denko America Inc HILICpak VG-50G 4A
Guard column for VG-50 4D and VG-50 4E columns, dimensions: 4.0 mm ID x 10 mm L
Waters Corp XBridge Protein BEH C4 Sentry Guard Cartridge, 300Å, 3.5 µm, 4.6 mm X 20 mm, 2/pk;
XBridge Protein BEH C4 Sentry Guard Cartridge, 300Å, 3.5 µm, 4.6 mm X 20 mm, 2/pk;
Sepax Technologies Inc Sepax HPLC Column Bio-C18, Guard cartridge with holder, 5 µm, 300 Å, 4 x 10 mm
Wide range of pore sizes and high compatibility with 100% aqueous phases make Bio-C18 columns ideal for high resolution mapping of peptides and separation of natural and synthetic peptides and small proteins. The specially designed surface bonding chemistry and the pore sizes allow for extended retention and selectivity for polar and hydrophilic compounds, such as peptides and amino acids. C18 monolayer formed by special bonding chemistry does not collapse in pure aqueous solution.
Sepax Technologies Inc Sepax HPLC Column GP-C18, Guard cartridge with holder, 3 µm, 120 Å, 4 x 10 mm
GP-C18 uses full coverage bonded silica packing, which provides exceptionally high stability. The unique mono-functional bonding chemistry of GP-C18 avoids the formation of multiple C18 layers. Such uniform stationary phase allows the separation to achieve high selectivity and high efficiency.
Sepax Technologies Inc Sepax HPLC Column Antibodix WCX, NP5, Guard cartridge (No Holder), 2 x 10 mm
Antibodix columns are specially designed for high resolution, high efficiency and high recovery separations of antibodies. The packing support is composed of a rigid, spherical, highly cross-linked poly(styrene divinylbenzene) (PS/DVB) non-porous bead. The non-porous resin has particle size of 1.7, 3, 5 and 10 µm. The PS/DVB resin surface is grafted with a highly hydrophilic, neutral polymer thin layer with the thickness in the range of nanometer. On the top of the hydrophilic layer, weak cation-exchange functional groups are attached via a proprietary chemistry, resulting in high capacity ion-exchange layer.
Sepax Technologies Inc Sepax HPLC Column HP-SCX, Guard cartridge with holder, 5 µm, 120 Å, 4 x 10 mm
HP-SCX is a silica based mixed-mode strong cation exchange phase. The phase has a mixed chemical structure of sulfonic acid and phenyl group. The mixed mode of strong cation-exchange and hydrophobicity offers unique selectivity and high resolution separation for cationic/basic and nitrogen containing compounds as well as desirable retention for a variety of weak cationic and neutral organic compounds. The uniform polymeric bonding of HP-SCX enhances its stability under various separation conditions.HP-SCX has expanded its applications from the traditional SCX separation of cationic and nitrogen containing compounds to weak cationic and neutral organic molecules. Examples include separation of analytes of amines and polyamines, such as alkaloids, peptides, codeine, and cough and cold ingredients.
Sepax Technologies Inc Sepax HPLC Column BR-C18, Guard cartridge with holder, 1.8 µm, 120 Å, 2 x 10 mm
Utilizing highest purity and enhanced mechanical stability silica and pure bonding reagents, BR-C18 bonded phases have been innovatively and specially designed to ensure maximum surface coverage and full end-capping, which leads to carbon content as high as 19.0%. The bonding chemistry is completely controlled that results in very reliable column-to-column reproducibility. The maximum surface coverage allows BR-C18 to have exceptional stability, resulting in high pH stability in the range of 1.5 to 10.5.
Waters Corp Shodex SH-G Guard Column, 7 µm, 6 mm x 50 mm, 1/pk
Shodex high performance polymeric columns for sugar analysis
Waters Corp Shodex SC-LG Guard Column, 7 µm, 6 mm x 50 mm, 1/pk
Shodex high performance polymeric columns for sugar analysis
Waters Corp DeltaPak C18 Radial-Pak Guard, 300Å, 15 µm, 40 mm X 10 mm, 2/pk
Delta-Pak packings, ideal for the separation of peptides, proteins, and natural products, are based on a highly stable, bonded, endcapped 5µm or 15µm spherical silica. Delta-Pak is available in two different pore sizes (100Å and 300Å) with either C4 or C18 bonded phase. Delta-Pak packings are available in different cartridge and column configurations, providing consistent and predictable scale-up capabilities for milligram-to-gram scale purification. Also, by having the same chemistry available on a high-efficiency 5µm particle, you can easily check the purity of your fractions.