HPLC Guard Columns and Cartridges
YMC America, Inc ProC18 guard 120A 5um 20x3mm
YMC-Pack Pro C18 columns start with a tightly controlled highly purified silica gel followed by a high-coverage C18 bonding and finished with a unique endcapping procedure utilizing Lewis acid/Lewis base chemistry Together these features provide unequaled separations with sharp and symmetrical peaks for all types of organic molecules especially basic pharmaceuticals and chelating compounds
YMC America, Inc ODS-AQ guard 200A 3um 10x3mm
YMC-Pack ODS-AQ is a unique reversed-phase material with both a hydrophobic high carbon loading and a relatively hydrophilic surface Because of the hydrophilic surface ODS-AQ can be wetted with polar eluents It provides chromatographers reproducible retention and excellent peak shape in highly aqueous mobile phases including 100% water This is due to the C18 ligands on ODS-AQ actually being lifted from the surface by the action of the eluents penetrating the silica pores Selectivity on YMC-Pack ODS-AQ can be subtly different from that seen on conventional ODS columns Differences in selectivity are most often encountered when analyzing mixtures of relatively polar compounds Typically longer retention and greater resolution are observed with ODS-AQ Available in both 120 and 200 pore sizes YMC-Pack ODS-AQ is well-suited for analysis and purification of peptides and other biomolecules
YMC America, Inc Triart C18 grd 120A 5um 10x3mm
YMC-Triart phases are based on organic/inorganic hybrid particles that combine the high mechanical stability and efficiency of a silica-based packing material with the robust chemical stability of a polymer-based packing material This versatile resin is produced using tightly controlled particle formation technology adapted from micro-reactor technology The resulting uniform particle and pore size distributions as well as the smooth surface greatly contribute to excellent peak shape and separation reproducibility In addition YMC-Triart materials are highly resilient and robust when used at extreme pH elevated temperature and high pressure
YMC America, Inc Cell-SC guard 3um 20x4mm
YMC s CHIRAL ART series features polysaccharide-derived chiral stationary phases (CSPs) based on amylose and cellulose tris-carbamate derivatives available in both coated and immobilized formats These columns provide exceptional stereoselectivity durability and solvent versatility supporting normal-phase reversed-phase and supercritical fluid chromatography (SFC) modes
YMC America, Inc Jsphr H80 grd 80A 4um 10x3mm
The J sphere series of columns consists of three kinds of ODS made from the same silica gel base each with a different ligand coverage The 4 um 80 silica support provides outstanding chromatographic efficiency while the high surface area material (500 m2/g) offers exceptional interaction with analytes This combination provides excellent peak symmetry across all J sphere products The variations in ligand coverage produce three columns with different hydrophobicity hydrogen bonding capacity and steric selectivity for tertiary structures Because of this J sphere can be used with confidence to identify structural differences of solutes and to improve the efficiency of separation optimization
YMC America, Inc CN guard 120A 20um 10x10mm
YMC-Pack CN can be used for both normal phase and reversed phase analyses due to the medium polarity of the cyanopropyl phase bonded to the silica base particle It can be used in normal phase with low-polarity mobile phases such as hexane or in reversed phase with highly-polar mobile phases such as methanol and water YMC-Pack CN can be useful for shortening analysis time in situations where retention is substantial using C18 or C8 or when separation optimization is difficult
YMC America, Inc ODS-AM guard 120A 3um 10x4mm
YMC-Pack ODS-AM is produced with specific emphasis on lot-to-lot reproducibility of the packing material Strict manufacturing control is performed on all aspects of quality including physical properties of the silica base gel as well as surface modifying processes ensuring exceptional reproducibility
Waters Corporation Sentry Guard Cartridge, 100Å, 5 μm, 3.9 mm x 20 mm
These reversed-phase columns incorporate patented embedded polar group technology, which shields the silica's residual silanol surface from highly basic analytes. This technology significantly improves peak shape and resolution due to reduced silanol activity.
- Chemistry: C8
- Separation mode: Reversed phase
- Particle substrate: Silica
- pH range: 2 to 8 pH
- Maximum pressure: 6000 psi (415 Bar)
- Endcapped
- Bonding technology: Shield RP8
- Silanol activity: Low
- Particle shape: Spherical
- Particle size: 5 μm
- Pore size: 100 Å
- Format: Sentry guard cartridge
- Surface area: 335
- System: HPLC
- USP classification: L7
- Inner diameter: 3.9 mm
- Length: 20 mm
- Carbon load: 15%
- Units per package: 2 pk
Waters Corp Waters XBridge Premier BEH C8 Column, 2.5 μm, 4.6 × 150 mm
The XBridge Premier BEH C8 Column is engineered for UHPLC/UPLC, offering less retention than C18 columns for rapid method development. It integrates trifunctionally bonded BEH particles for a wide pH range (1-12) and MaxPeak High Performance Surface technology to minimize analyte/surface interactions, enhancing peak shape and signal.
- Less retentive than C18 columns, ideal for rapid method development.
- Wide usable pH range (1 to 12) with superior low pH stability and ultra-low column bleed.
- MaxPeak High Performance Surface technology reduces analyte/surface interactions, increasing recovery, sensitivity, and reproducibility.
- Reduces conditioning times and improves peak shapes.
- Good universal choice, stable across wide pH and high temperatures, simplifying mobile phases.
Optimize Technologies EXP Trap Cartridge, 3.0mm x 5mm, 3.0µm EXP, 3.0µm EXP, C8, 3pk
The Hand-Tight EXP™ Trap Column is rated to 20,000+ psi. This unique design connects directly to any injection valve (with 10-32 threads) or in-line with 1/16” tubing for unparalleled convenience and efficiency. The EXP™ System enables chemists to quickly remove detergents or salts which can affect the ionization process in MS work. This trapping technique can concentrate the sample directly on-line, allowing for increased recovery of precious sample material compared to off-line techniques. Free-Turn™ architecture allows users to change cartridges by hand without breaking fluid connections on the holder inlet/outlet. The EXP™ Trap Column family now offers packed beds available in 2, 5, 10, 15, 20 and 30mm lengths with diameters ranging from 1-4.6mm and bed volumes from 1.6-600µL. Please contact your representative directly if you're interested in a length other than 5mm.
Waters Corp SunFire C18 VanGuard Cartridge, 100Å, 3.5 µm, 3.9 mm X 5 mm, 3/pk;
SunFire C18 VanGuard Cartridge, 100Å, 3.5 µm, 3.9 mm X 5 mm, 3/pk;
