HPLC Guard Columns and Cartridges
Waters Corp Symmetry Shield RP18 Sentry Guard Cartridge, 100Å, 5 µm, 3.9 mm X 20 mm, 2/pk
These reversed-phase columns contain Waters patented embedded polar group technology that “shields” the silica’ residual silanol surface from highly basic analytes. The reduced silanol activity for the SymmetryShield RP18 column significantly improves peak shape and resolution.
Waters Corp Symmetry Shield RP8 Sentry Guard Cartridge, 100Å, 3.5 µm, 3.9 mm X 20 mm, 2/pk
These reversed-phase columns contain Waters patented embedded polar group technology that “shields” the silica’ residual silanol surface from highly basic analytes. The reduced silanol activity for the SymmetryShield RP8 column significantly improves peak shape and resolution.
Sepax Technologies Inc Sepax HPLC Column Bio-C18, Guard cartridge with holder, 5 µm, 300 Å, 2 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.
Waters Corp XSelect HSS T3 Sentry Guard Cartridge, 100Å, 3.5 µm, 4.6 mm X 20 mm, 2/pk
The HSS T3 column is a fully endcapped, low-coverage C18 bonded-phase column designed to retain extremely polar compounds by reversed-phase in high aqueous mobile phases.
Waters Corp Viridis BEH VanGuard Pre-column, 130Å, 3.5 µm, 2.1 mm X 5 mm, 3/pk
The Viridis sub-2-µm and 3.5 µm columns demonstrate high efficiency and resolution. The reduction and control of surface silanol activity on Viridis particles delivers, under SFC conditions, excellent peak shapes — without the use of mobile-phase additives — even for well-retained basic achiral compounds.
Mac-Mod Princeton AMINO 100 Å, 5 µm, 21.2 x 10 mm Guard Cartridges (1/pk)
Princeton Chromatography Achiral SFC columns are designed and manufactured in the US, well known for innovating novel and robust workhorse phase chemistries, for the analysis of achiral SFC applications. Princeton designs myriad phase chemistries to improve the selectivity and efficiency of SFC analysis. Known for originally innovating the 2-EP phase chemistry, explore what Princeton has to offer. Columns are available from analytical to preparative sizes and are available in a wide range of pore sizes, particle sizes, column ID's and lengths. If you do not see something that you want, please just ask!
Mac-Mod Avantor Prevail C8, 110 Å, 5 µm, 2.1 x 7.5 mm Guard Cartridges (3/pk)
Avantor Prevail HPLC columns exhibit long column lifetime in both highly aqueous and highly organic mobile phases. Avantor Prevail HPLC columns are silica based except for Prevail Carbohydrate ES. The stability of these phases is such that a single column can be switched between highly aqueous for analysis of highly polar analytes and highly organic for strong retention of hydrophobic analytes. Avantor Prevail HPLC columns are stable from highly organic to highly aqueous. Avantor Prevail HPLC columns are specialty phases for specific applications. Avantor Prevail HPLC columns provide excellent sensitivity with microbore and ELSD applications.
Mac-Mod Avantor Alltima HP C18-HL, 100 Å, 5 µm, 3.0/4.6 x 7.5 mm Guard Cartridges (3/pk)
Avantor Alltima HP columns combines a range of different phase chemistries with high purity silica. Avantor Alltima HP columns product family combines the selectivity and performance needed to overcome the most challenging separation needs. Avantor Alltima HP columns provide low column bleed makes these columns ideal for microbore applications. Avantor Alltima HP columns are made of high purity silica that provide excellent column stability with multiple selectivity options.