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Catalog #Product NameParticle SizeSizeUnits
Catalog #
917450212
Product Name
Ultra C18 Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
917450210
Product Name
Ultra C18 Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
910350212
Product Name
Ultra C8 Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
910350210
Product Name
Ultra C8 Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
910250212
Product Name
Ultra C4 Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
910250210
Product Name
Ultra C4 Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
910150212
Product Name
Ultra C1 Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
910150210
Product Name
Ultra C1 Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
912750212
Product Name
Ultra Aromax Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
912750210
Product Name
Ultra Aromax Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
917850212
Product Name
Ultra Aqueous C18 Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
917850210
Product Name
Ultra Aqueous C18 Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
910950212
Product Name
Ultra Biphenyl Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
910950210
Product Name
Ultra Biphenyl Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
917550212
Product Name
Ultra IBD Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
917550210
Product Name
Ultra IBD Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
917950212
Product Name
Ultra PFP Propyl Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
917950210
Product Name
Ultra PFP Propyl Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
910650212
Product Name
Ultra Cyano Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
910650210
Product Name
Ultra Cyano Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
910750210
Product Name
Ultra Amino Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
910050212
Product Name
Ultra Silica Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
910050210
Product Name
Ultra Silica Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
917750212
Product Name
Ultra Carbamate Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
917750210
Product Name
Ultra Carbamate Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Catalog #
918150212
Product Name
Ultra Quat Guard Cartridge
Particle Size
5 μm
Size
10 x 2.1 mm
Units
3-pk.
Catalog #
918150210
Product Name
Ultra Quat Guard Cartridge
Particle Size
5 μm
Size
10 x 4.0 mm
Units
3-pk.
Chromatogram
Compounds
Description
Specifications
Tech Tips

Managing High Backpressure

High backpressure is one of the most common problems encountered in HPLC analyses. Normal column backpressure is observed after a new column has been installed and equilibrated with mobile phase. Unfortunately, this pressure often will increase as the column is used because particles collect on the column inlet frit. These particles can be sample impurities, mobile phase contaminants, or materials from the injector or autosampler rotor seal. In addition to increasing backpressure, particles on the frit can cause split peaks, peak tailing, and, eventually, over-pressure shut-down. In some circumstances, these problems can be corrected by back-flushing the column. However, in many cases the result is an unusable column. To minimize backpressure problems, all samples and mobile phase solvents must be filtered before use, and rotor seals should be changed on a routine basis. Along with these preventive measures, it is advisable to use precolumn filters such as the Trident guard column protection system. Particles build up on the inexpensive, replaceable frit in the filter, instead of on the permanent frit at the column inlet.
Documentation