119 Results for: "Solid Phase Extraction"

Supplier: VARIAN

Bond Elut™ NH₂ is a weaker anion exchanger than sorbents such as SAX (a quaternary amine sorbent that is always charged) and is therefore a better choice for retention of very strong anions, such as sulfonic acids, which may retain irreversibly on a SAX sorbent. Similar to Diol and SI sorbents, Bond Elut™ NH₂ is excellent for the separation of structural isomers.

Supplier: VARIAN

Bond Elut™ DEA bears some resemblance to Bond Elut™ NH₂ in its properties but with a slightly lower capacity as an anion exchange sorbent. DEA has a moderately non-polar character due to the alkyl side chains on the amino functionality. These groups still afford a medium level of polarity, higher than C₈ but less polar than C₂ or CN-E.

Supplier: VARIAN

Bond Elut™ Plexa PCX uses a polymeric cation exchange resin that combines the outstanding properties of Bond Elut™ Plexa - superior flow characteristics and improved analytical performance - with strong cation exchange functionalities. This mixed-mode SPE sorbent removes neutral and acidic interferences from the matrix, concentrates basic analytes and therefore improves sensitivity in the determination of basic compounds.

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™ C8 is very similar in properties to C18, but is not as retentive for non-polar compounds, due to its shorter hydrocarbon chain, and therefore reduced carbon loading. C8 is an excellent replacement for C18 when analytes are too strongly retained for effective elution. The potential for polar interactions is somewhat higher than for C18 because there is less coverage of the silica surface. These polar interactions are not, however, a significant property of C8.

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™ 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

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

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: Thermo Fisher Scientific

Vacuum manifolds for HyperSep™ SPE columns allow easy processing of samples.

Supplier: VARIAN

Bond Elut™ SCX is a strong cation exchanger with a very low pKa. Although the pKa is similar to Bond Elut™ PRS, the presence of the benzene ring in the functional group increases the potential for non-polar interactions. This non-polar characteristic becomes particularly important when conducting ion-exchange from aqueous systems, where selectivity towards compounds exhibiting cationic and non-polar character is seen.

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: Thermo Fisher Scientific

Flat, 100% porous graphitic carbon (PGC) with selectivity for structurally similar compounds, offering separation of compounds with simple solvents. Hydrophobic reversed phase; normal phase adsorption; polar retention.

Supplier: Thermo Fisher Scientific

A polar sorbent primarily used to retain analytes in non-polar matrices.

Supplier: MACHEREY-NAGEL

Solid Phase Extraction Cartridges CHROMAFIX HR-X (M) minimum adsorbent weight: 130 mg pack of 50 1 * 50 items

Supplier: MACHEREY-NAGEL

Solid Phase Extraction Cartridges CHROMAFIX HR-X (L) minimum adsorbent weight: 360 mg pack of 50 1 * 50 items

Supplier: MACHEREY-NAGEL

Solid Phase Extraction Cartridges CHROMAFIX C18f (M) average content of sorbent: 480 mg pack of 50 1 * 50 items

Supplier: Abnova

KIT, ENA SCREEN ELISA KIT, ENA SCREEN ELISA IS AN INDIRECT SOLID PHASE ELISA FOR THE QUALITATIVE SCREENING OF IGG CLASS AUTOANTIBODI ES AGAINST EXTRACTABLE NUCLEAR ANTIGENS (ENA) IN HUMAN SERUM OR PLASMA. 1 * 1 KIT

Supplier: VARIAN

Mega be-nh2 1g 6ml 25/pk bond elut nh2 1g x 6ml 25/pk solid phase extraction 1 * 250 items

Supplier: Abnova

KIT, ENA COMBI ELISA KIT, ENA COMBI ELISA KIT IS AN INDIRECT SOLID PHASE ELISA FOR THE SEMI-QUANTITATIVE MEASUREMENT OF IGG CLASS AU TOANTIBODIES AGAINST EXTRACTABLE NUCLEAR ANTIGENS (ENA) IN HUMAN SERUM OR PLASMA. 1 * 1 KIT

Supplier: Abnova

KIT, ENA-6 PROFILE ELISA KIT, ENA-6-PROFILE ELISA KIT IS AN INDIRECT SOLID PHASE ELISA FOR SEMI-QUANTITATIVE DETERMINATION OF IGG CL ASS AUTOANTIBODIES DIRECTED AGAINST THE EXTRACTABLE NUCLEAR ANTIGENS SS-A (RO), SS-B (LA), SM RNP/SM, SCL-70 AND JO-1 1 * 1 KIT

Supplier: MACHEREY-NAGEL

The high purity CHROMABOND® adsorbents can be used for a self-filling of SPE columns or further analytical applications.

Supplier: MACHEREY-NAGEL

For the CHROMABOND® vacuum manifolds for upto 12, 16 or 24 samples the following accessories are available.

Supplier: Cytiva

Sera-Xtracta virus/pathogen kit for high-throughput total nucleic acid (DNA/RNA) isolation from bacteria and viruses including adenovirus (type 14), influenza A (H3N2) and COVID-19.

Supplier: VWR Collection

Borosilicate 3.3 glass.

Supplier: THERMO SAVANT

Savant™ SpeedVac™ medium capacity vacuum concentrators evapourate strong acids, bases, and aggressive organic solvents. Approved for combinatorial chemistry, these concentrators incorporate an intuitive programmable user display for enhanced usability.

Supplier: THERMO SAVANT

The Thermo Scientific™ Savant™ SpeedVac™ SPD130DLX vacuum concentrator is a medium-capacity, vacuum concentrator with a modular design. It is compatible with a wide variety of solvents and offers resistance to TFA, DMSO, and other aggressive solvents used in combinatorial chemistry applications.

Supplier: THERMO SAVANT

Thermo Scientific™ Savant™ SpeedVac™ SPD300P1-230 vacuum concentrator is a large-capacity vacuum concentrator with a modular design, ideal for drying aggressive organic solvents, strong acids, bases, and combinatorial chemistry solvents. It is capable of drying larger quantities of samples at one time and can support high-volume sample preparation needs

Supplier: THERMO SAVANT

Thermo Scientific™ Savant™ SpeedVac™ SPD300P1-230 vacuum concentrator is a large-capacity vacuum concentrator with a modular design, ideal for drying aggressive organic solvents, strong acids, bases, and combinatorial chemistry solvents. It is capable of drying larger quantities of samples at one time and can support high-volume sample preparation needs.