619 Results for: "Chromatography caps"

Supplier: Cytiva

HiPrep™ 16/60 Sephacryl® S-200 HR and HiPrep™ 26/60 Sephacryl® S-200 HR are pre-packed gel filtration columns for preparative separation of biomolecules of up to 5 and 13 ml sample volume respectively. Sephacryl® S-200 is used for separating mid-size proteins including antibodies and serum proteins.

Supplier: Cytiva

HiPrep™ 16/60 Sephacryl S-500 HR and HiPrep™ 26/60 Sephacryl® S-500 HR are pre-packed gel filtration columns for preparative separation of biomolecules of up to 5 and 13 ml sample volume respectively. Sephacryl® S-500 is used for separating polysaccarides, macromolecules with extended structures, and even small plasmids.

Supplier: Cytiva

HiPrep™ 16/60 Sephacryl® S-400 HR and HiPrep™ 26/60 Sephacryl® S-400 HR are pre-packed gel filtration columns for preparative separation of biomolecules of up to 5 and 13 ml sample volume respectively. Sephacryl® S-400 is used for separating polysaccarides, macromolecules with extended structures, and even small plasmids.

Supplier: VARIAN

Bond Elut™ PRS is a strong cation exchange sorbent that is also relatively high in polarity. With no appreciable degree of hydrophobicity, in non-polar solvents, PRS is capable of polar and hydrogen bonding interactions. Due to the very low pKa of PRS, a high ionic strength eluent must be used, and so the use of PRS is recommended for weaker cationic species such as pyridinium compounds.

Supplier: VARIAN

PBA is a unique sorbent consisting of a phenylboronic acid covalently linked to a silica gel surface. Covalent processes result in a higher retention to the sorbent surface than other mechanisms, resulting in superior clean-up. The boronate group has a high specificity for cis-diol containing compounds such as catechols, nucleic acids, low molecular weight proteins and carbohydrates.

Supplier: VARIAN

Bond Elut™ LMS polymeric sorbent lets you elute without having to add amine modifiers, buffers, or acids. The elimination of secondary interactions means that elution of analytes can be achieved with pure organic solvents or HPLC mobile phase-compatible solvent mixtures of low ionic strength. These characteristics are crucial to allow compatibility with LC/MS or other delicate analytical techniques.

Supplier: VARIAN

Bond Elut™ Diol (2OH) resembles unbonded silica in its tendency for strong hydrogen bonding with analytes. 2OH can also be employed in the non-polar mode because the hydrocarbon spacer on its functional group provides enough non-polar character for retention of hydrophobic analytes. Bond Elut™ Diol is a listed SPE device for the DIN 14333-1 method on benzimidazole fungicides.

Supplier: VARIAN

Bond Elut™ PSA is an alkylated amine sorbent that contains two different amino functionalities, one secondary and one primary. This gives a slightly higher pKa and ionic capacity compared to Bond Elut™ NH₂. The PSA functional group is a very effective bidentate ligand and is therefore an excellent sorbent for chelation applications. PSA has a significantly higher carbon load than most amino functional sorbents and thus is a better choice for polar compounds, which retain too strongly on Bond Elut™ NH₂.

Supplier: VARIAN

Bond Elut™ C18 is the most hydrophobic, bonded silica sorbent in the Bond Elut™ range. It is the most popular SPE sorbent because of its extremely retentive nature for non-polar compounds. C18 is generally regarded as having the broadest spectrum of retention among bonded silica sorbents, since it retains most organic analytes from aqueous matrices. When analysing small to intermediate molecules, Bond Elut™ C18 can be used for desalting aqueous matrices prior to ion exchange, as salts pass through the sorbent unretained.

Supplier: VARIAN

The water-wettable, hydroxylated exterior allows excellent flow, even with biological fluids. A gradient of polarity on the polymer surface shunts small analytes to the more hydrophobic centre of the polymer bead, where they are retained prior to the washing and elution steps. Plexa provides these performance enhancements due to a unique polymeric architecture with a non-retentive, hydroxylated, amide-free surface and a non-polar PS/DVB core for retaining small molecules.

Supplier: VARIAN

Bond Elut™ Certify II was developed specifically for the rapid and effective extraction of acidic drugs and metabolites from urine and other biological matrices. Certify II is a mixed-mode cartridge packed with non-polar C8 and strong anion exchange (SAX) sorbent. It has been optimised for acidic drugs such as 11-nor-delta-9-tetrahydrocannibinol-carboxylic acid, salicylic acid, ibuprofen, acetaminophen and other compounds that possess both non-polar and anionic characteristics.

Supplier: VARIAN

Bond Elut™ NEXUS is an ultra-clean polymeric sorbent which has bi-modal porosity and a high surface area. NEXUS offers a nonpolar retention mechanism with no pre-conditioning required. The large particle size makes NEXUS ideal for extractions from highly viscous samples, such as horse urine.

Based on the same base polymer technology, Bond Elut™ NEXUS WCX is a weak cation exchange sorbent that offers extra selectivity for analytes, such as quaternary ammonium drugs and anabolic steroids.

Supplier: VARIAN

Bond Elut™ PPL is a styrene-divinylvenzene (SDVB) polymer that has been modified with a proprietary non-polar surface. PPL will retain even the most polar classes of analytes, including phenols. The large particle size allows ease of flow for viscous or particulate rich water samples, while the high surface area and strong hydrophobicity ensure reproducible extractions with high recoveries upon elution. Bond Elut™ PPL is suitable for EPA Method 528 ‘Determination of Phenols in Drinking Water by SPE and Capillary GC/MS’.

Supplier: GRANT INSTRUMENTS

A range of eco-friendly, refrigerated/heating circulating baths with an intuitive user-interface and sleek design. Units offer significant running cost savings whilst delivering powerful cooling when needed. Choice of 2 models with temperature range of –25 to +150 °C (model dependent*). Ideal for applications in pharmaceutical, education, industrial and life science areas for use with mini pilot plant reactors, cooling rotary evaporators, replacing running tap water cooling, immersing small samples, photometry, chromatography systems, sample preparation, general cooling, reaction chemistry, temperature control, semi-conductor manufacturing, rheometry, refractometry and electrophoresis cooling.

Supplier: Agilent

Step 2: Dispersive SPE cleanup
Select the dispersive SPE kit suited to the type of food being analysed and the method you are following. In this step, an aliquot of the sample extract from step one (see QuEChERS extraction kits) is added to a 2 or 15 ml centrifuge tube containing a small amount of SPE sorbent and MgSO₄. The sorbent will pull out interfering matrix materials from the sample, while the MgSO₄ helps remove excess water and improve analyte partitioning.

Supplier: Spectrum Laboratories

Disposable tubes for liquid and solid samples with one hand. The sample to be transfered is inserted with harvester and discharged using the plunger.

Supplier: Spectrum Laboratories

CultureGard® HF perfusion hollow fibre sterilising grade filter for cell culture perfusion. Made with 0,2 µm MWCO DynaFibre® membrane that permits the flow of culture medium while preventing the introduction of foreign microbials.

Supplier: Spectrum Laboratories

MediaKap filters are designed to sterilise or clarify culture media or any other aqueous solutions. Can be used as pressure filters with a peristaltic pump, a hand pump or a syringe.

Supplier: Spectrum Laboratories

Kit dialysis tank cap 6 inch 1 * 1 KIT

Supplier: Avantor

Aluminium oxide, powder, BAKER ANALYZED® for chromatography, J.T.Baker®

Supplier: Avantor

Aluminium oxide basic, powder, BAKER ANALYZED® Brockmann Activity Grade I for chromatography, J.T.Baker®

Supplier: Avantor

Glycine ≥99.5% (dried basis), Ultrapure Bioreagent for Electrophoresis, Liquid Chromatography and Molecular Biology, for liquid chromatography, J.T.Baker®

Supplier: Avantor

Selective adsorbent for gas chromatography. Contains activated magnesium silicate.

Supplier: Avantor

For protein precipitation, liquid chromatography and molecular biology applications.

Supplier: Avantor

Selective adsorbent for gas chromatography. Contains activated magnesium silicate.

Supplier: Avantor

ULTRAPURE BIOREAGENT—A line of high purity reagents tested for use in biotechnology applications, such as electrophoresis, and liquid chromatography. Where applicable, tests include DNase, RNase, Protease, heavy metals and insoluble matter.

Supplier: Avantor

1-Pentanesulphonic acid sodium salt ≥98% for ion pair chromatography, J.T.Baker®

Supplier: Avantor

Powder. For liquid chromatography and molecular biology applications. Lot analysis on label.

Supplier: Avantor

For high performance liquid chromatography.

Supplier: Avantor

Crystals. For LC and molecular biology. Lot analysis on label.