HPLC Guard Columns and Cartridges
SHIMADZU SCIENTIFIC INS (3P ONLY) COLUMN LC SHIM-PACK GIST GUA
NC3719025 COLUMN LC SHIM-PACK GIST GUA
SHIMADZU SCIENTIFIC INS (3P ONLY) COLUMN LC SHIM-PACK GIST GUA
NC3719026 COLUMN LC SHIM-PACK GIST GUA
Waters Corp CORTECS Phenyl VanGuard Pre-column, 90Å, 1.6 µm, 2.1 mm X 5 mm, 3/pk;
CORTECS Phenyl VanGuard Pre-column, 90Å, 1.6 µm, 2.1 mm X 5 mm, 3/pk;
YMC America, Inc Diol-NP guard 60A 5um 10x20mm
YMC-Pack Diol-NP is a versatile alternative to silica for normal phase separations and provides much better reproducibility when compared to bare silica material It shows typical normal phase retention behavior when used with low-polarity mobile phases due to hydroxyl groups on the surface of the stationary phase acting as polar groups YMC-Pack Diol-NP can also be used in HILIC-mode with organic/water mobile phases
YMC America, Inc Diol guard 300A 3um 20x2.1mm
YMC-Pack Diol is a size exclusion chromatography column packed with dihydroxypropyl-bonded silica and available in four different pore sizes It exhibits high mechanical strength and is useful for molecular weight determination of proteins and sugars The 2 m and 3 m particle sizes provide high resolution and fast analysis
YMC America, Inc Ph-HG guard 120A 10um 50x30mm
Phenyl columns provide unique selectivity when compared to aliphatic straight chain reversed phase materials such as C18 C8 and C4 YMC-Pack Phenyl is a monomerically-bonded phenyl and is fully endcapped Typical applications include aromatic compounds phenols fullerenes sweeteners
YMC America, Inc TMS-HG guard 120A 20um 50x30mm
YMC-Pack TMS columns are bonded with trimethylmonochlorosilane to create a phase with intermediate polarity This makes for a versatile stationary phase that is useful for analysis of extremely hydrophobic compounds using conventional reversed-phase solvents or highly polar compounds using high aqueous solvents The unique chemistry of this packing material is also well-suited for the analysis of multifunctional compounds Selectivity characteristics of a C1 bonded phase can be unique and samples must be evaluated to determine the applicability of the phase
YMC America, Inc SIL-HG guard 60A 10um 30x10mm
The high-purity silica found in YMC-Pack SIL columns provides virtually complete sample recovery The absence of silica impurities reduces non-specific sample adsorption and the totally porous nature of the silica provides high sample loading The elevated chemical purity of YMC silica results in a particle structure exhibiting high mechanical strength YMC-Pack SIL is suitable for separation of fat-soluble compounds using non-polar mobile phases as well as the separation of positional isomers that are difficult to separate in reversed-phase mode SIL-06 (60 pore size) has greater adsorption properties than SIL (120 pore size) due to its larger surface area and is generally useful for separating natural products with low molecular weight