233 Results for: "Solid Phase Extraction"

Supplier: VARIAN

Bond Elut™ Jr cartridges have top and bottom Luer fittings allowing easy sample processing when used in conjunction with standard SPE cartridges. Bond Elut™ LRC cartridges have a large reservoir above the sorbent bed and are suitable for use on any standard SPE vacuum manifold.

Supplier: Thermo Fisher Scientific

HyperSep® SLE provides a fast and effective sample preparation technique for removal of phospholipids from biological matricies. HyperSep® SLE deals with sample preparation of biological matricies via a simple, efficient and an effective protocol, the focus being the removal of interfering phospholipids which cause a number of issues for end point analysis.

Supplier: VARIAN

Inheemse silica wordt algemeen beschouwd als het meest polaire SPE sorptiemiddel beschikbaar. Bond Elut™ SI is bijzonder effectief bij het scheiden van verbindingen met een vergelijkbare structuur. De analyten in een niet-polair oplosmiddel toepassen, daarna de polariteit van het oplosmiddel verhogen door de concentratie van een polaire modificator te verhogen, zoals THF of ethylacetaat, zorgt voor doeltreffende scheidingen.

Supplier: VARIAN

Bond Elut™ CH is a mid-polarity sorbent that exhibits unique selectivities for certain analytes. When employed as a non-polar sorbent, CH has the approximate polarity of a C₂ sorbent. Bond Elut™ CH is often a good choice when non-polar sorbents such as C₁₈, C₈ or C₂ do not provide the desired selectivity.

Supplier: Beckman Coulter

This prep system kit isolates and purifies genomic DNA (gDNA) from whole blood. The kit is uses Solid Phase Reversible Immobilisation (SPRI) paramagnetic bead-based technology to effectively produce a high recovery of high quality DNA for downstream applications such as PCR.

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: 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™ 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™ 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™ 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

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™ 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™ 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

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: Thermo Fisher Scientific

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

Supplier: VARIAN

De water-bevochtigbare, gehydroxyleerd buitenkant zorgt voor een uitstekende stroom, zelfs met biologische vloeistoffen. Een gradient van polariteit op het oppervlak van het polymeer, rangeert kleine analyten naar het meer hydrofobe centrum van de polymeerkorrels, waar ze vastgehouden worden prior aan de was- en elutiestappen. Plexa levert deze prestatieverbeteringen vanwege een unieke polymeer-architectuur met een niet-retentief, gehydroxyleerd, amidevrij oppervlak en een niet-polaire PS-/DVB-kern voor het vasthouden van kleine moleculen.

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

Plat, 100% poreus grafiet (PGC) met selectiviteit voor structureel vergelijkbare verbindingen, met scheiding van verbindingen met eenvoudige oplosmiddelen. Hydrofobe omgekeerde fase; normale fase adsorptie; polaire retentie.

Supplier: Thermo Fisher Scientific

Een polaire sorbent die voornamelijk wordt gebruikt om analyten in niet-polaire matrices te behouden.

Supplier: Restek

Reference Book 1 * 25 ST

Supplier: Restek

Reference Book 1 * 1 ST

Supplier: MACHEREY-NAGEL

[EN]CHROMAFIX HR-X (M) 1 * 50 ST

Supplier: MACHEREY-NAGEL

[EN]CHROMAFIX HR-X (L) 1 * 50 ST

Supplier: MACHEREY-NAGEL

SPE Cartridge Chromafix C18f (M) 480mg 1 * 50 ST

Supplier: Agilent

[EN]SILICA SAX - BOX 30X 6 ML TUBES M 1 * 30 ST

Supplier: Agilent

[EN]MIXED C8/SI-SCX BOXX 1ML TUBESMG 1 * 100 ST

Supplier: Agilent

[EN]C18 ENDCAPPED BOX 30X 6ML TUBES 500M 1 * 30 ST

Supplier: Agilent

C8 OCTYL - BOX 30X 6 ML TUBES 500 MG 1 * 1 ST