533 Risultati per: "chromatography preparative"

Supplier: Avantor

Materiali di confezionamento per la cromatografia preparativa e flash a bassa pressione. Chimicamente stabile da pH 2 a 8,5. Non sono danneggiati dall'uso di detergenti e agenti antimicrobici come l'azide di sodio, soluzioni acquose diluite di acido trifluoroacetico e acido acetico, solventi organici come metanolo e acetonitrile, e soluzioni acquose concentrate di sali e urea. Le confezioni sono caratterizzate da particelle di forma irregolare.

Supplier: Avantor

Avantor® ACE® Excel® C18-Amide is a uniquely designed stationary phase offering improved retention of polar compounds, enhanced phenolic resolution and alternative selectivity to C18 bonded columns. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: VWR Chemicals

Nitrato, soluzione standard, 1000 mg/l, VWR®, Indice: KNO₃ in H₂O, Applicazione: Standard di cromatografia ionica

Supplier: Avantor

Avantor® ACE® C18-PFP phase utilises a specially developed ligand combining a C18 chain with integral PFP functionality. This results in a phase that maintains the hydrophobic, stability and low bleed characteristics of leading C18 phases, yet provides the multiple retention mechanisms of a PFP phase.

Supplier: Avantor

These ultra inert Avantor® ACE® Phenyl-300 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Merck

Lastre PLC (strati preparativi) si basano sulla stessa, comprovata, tecnologia del legante silicico, Merck, la stessa delle lastre analitiche per TLC. Le lastre sono disponibili con strati di silica gel non modificati con spessore degli strati che va da 500 µm fino a 2000 µm, con o senza indicatore di fluorescenza e sottoposte a processo di vetrificazione.

Supplier: Novus Biologicals

This product was prepared from monospecific antiserum by immunoaffinity chromatography using Rat IgM coupled to agarose beads followed by solid phase adsorption(s) to remove any unwanted reactivities. Assay by immunoelectrophoresis resulted in a single precipitin arc against anti-Goat Serum, Rat IgM and Rat serum.

Supplier: Trajan Scientific and Medical

Micro Extraction by Packed Sorbent (MEPS™) is a new development in the field of sample preparation by SPE (solid phase extraction). The MEPS™ product consists of two parts, the MEPS™ syringe and the MEPS™ Barrel Insert and Needle assembly (BIN). The MEPS™ approach to sample preparation is suitable for reversed phases, normal phases, mixed mode and ion exchange chemistries. Because MEPS™ BINs can be used for sample volumes as small as 10 µl it makes them particularly well suited to on-line use with LC-MS analysis of volume limited samples.

Supplier: Avantor

Avantor® ACE® Excel® C18-HL columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® Excel® C18-HL columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® C18 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

These ultra-inert Avantor® ACE® Excel® C4 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

La fase C18-AR di Avantor® ACE® utilizza un legante appositamente sviluppato che combina una catena C18 con funzionalità fenilica integrale, combinando così i vantaggi delle caratteristiche C18 e feniliche in un'unica fase. Può essere utilizzato per le separazioni con colonna C18 "standard", ma è consigliato anche per le separazioni che coinvolgono composti contenenti funzionalità aromatica.

Supplier: Avantor

Avantor® ACE® C18-300 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative. These columns are designed for a wide range of chromatographic applications, to provide great performance with acidic, basic and neutral molecules.

Supplier: Avantor

Le colonne Avantor® ACE® C18 garantiscono un'elevata riproducibilità e durata utile. Queste colonne in acciaio inossidabile sono disponibili in un'ampia gamma di dimensioni e granulometrie delle particelle, da capillari a preparative. Queste colonne sono progettate per un'ampia gamma di applicazioni cromatografiche, per garantire prestazioni eccellenti con molecole acide, basiche e neutre.

Supplier: Avantor

Avantor® ACE® Excel® C18-Amide is a uniquely designed stationary phase offering improved retention of polar compounds, enhanced phenolic resolution and alternative selectivity to C18 bonded columns. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Colonne di biocromatografia per HPLC analitica e preparativa, LC a bassa pressione e purificazione in batch.

Supplier: Avantor

Avantor® ACE® C8-300 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: SIGMA ALDRICH MICROSCOPY

Naphthol blue black (NBB) is an textile diazo dye, with high photo- and thermal-stability. Photoelectrochemical degradation of this dye yields colorless quinone as end product. Pure grade of NBB is generally used for dyeing foodstuffs, drugs and cosmetics. It is also used as a protein stain in chromatography and electrophoresis and as a biological stain. Commercial grade of NBB is a widely used textile dye. It is used in dyeing wool, nylon, silk and in textile printing. In addition, it is also employed for colouring of soaps, anodised aluminum and casein, wood stains and writing ink preparation.

Supplier: Merck

The MultiScreen® deep well solvinert filter plate is intended for a wide range of applications including total drug analysis, bead cleavage (solid-phase combinatorial chemistry and peptide synthesis), and sample preparation before high-performance liquid chromatography (HPLC)/ultraviolet (UV) and liquid chromatography-tandem mass spectrometry (LC-MS/MS). This filter plate is fully automation compatible.

Supplier: Merck

The tricyclazole CRM may also find the following uses: Determination of tricyclazole content in paddy rice using sliver colloid as a substrate and pyridine as an internal standard by surface-enhanced Raman spectroscopy (SERS). To detect residues of tricyclazole and thiram in pear fruit extracts using SERS. Dissipation studies of penoxsulam tricyclazole and profoxydim in rice paddy systems using HPLC-Diode Array Detection (DAD). Determination of tricyclazole residues in rice using liquid chromatography-tandem mass spectrometry (LC-MS/MS) along with the QuEChERS method of sample preparation. Degradation of tricyclazole (TC) in an aqueous solution and real pesticide industry wastewater (RPW) by electron beam (EB) radiation.

Supplier: Avantor

Avantor® ACE® CN-ES combines CN polar selectivity with enhanced hydrophobicity, enabling the benefits of both interactions to be fully exploited. Extra phase stability and increased column lifetime is provided by an extended alkyl chain spacer between the silica surface and cyano group. Avantor® ACE® CN-ES is suitable for both reversed phase and normal phase separations.

Supplier: Merck

ZipTip is a 10 µl pipette tip with a 0,6 or 0,2 µl bed of chromatography media fixed at its end with no dead volume. It is ideal for concentrating and purifying samples for sensitive downstream analyses.

Supplier: Avantor

Avantor® ACE® C18-300 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative. These columns are designed for a wide range of chromatographic applications, to provide great performance with acidic, basic and neutral molecules. These columns provide excellent peak shape even at extremely low levels of additives such as TFA, making them ideal for LC/MS applications.

Supplier: Avantor

La confezione in scala ridotta è destinata all'uso a bassa pressione con una pompa peristaltica.

Supplier: Sartorius

Elimination of particles from samples prior to HPLC or other chromatographic analysis is essential in order to maintain the integrity of the chromatography column and to maximise its operating life time. Minisart® syringe filters optimised for sample preparation consist of a polypropylene (PP) housing and membrane components featuring maximum chemical compatibility and minimum extractables to ensure excellent results. Due to the typical range of volumes from less than 1 ml to 100 ml these filters are available in three different diameters with an effective filtration area of 0,12, 1,7 and 4,8 cm².

Supplier: Cytiva (Formerly Pall Lab)

La gamma di piastre filtranti AcroPrep™ Advance offre diversi tipi di membrane e dimensioni dei pori per fornire le migliori prestazioni possibili in varie applicazioni di preparazione dei campioni e di screening a resa elevata. Le piastre filtranti AcroPrep™ Advance sono ideali per concentrazione, purificazione e desalinazione di proteine e peptidi, applicazioni con sfere e in cromatografia su resine, frazionamento grossolano e chiarificazione di lisati, filtrazione generica.

Supplier: MERCK PRODUCTION CHEMICALS

2-Propanolo, EMPROVE® EXPERT BP, Ph. Eur., USP for preparative chromatography, SAFC®

Supplier: Merck

EXtrelut® NT è una speciale terra di diatomea, inerte, con pori larghi e ampio volume poroso. È stata utilizzata per lungo tempo nella ricerca, per la preparazione di campioni di urina, sangue intero, plasma e altre matrici biologiche. Altre applicazioni includono test dei residui e ambientali, quali l'analisi delle acque industriali, domestiche e reflue. EXtrelut® NT è disponibile già confezionato in cartucce o come sorbente sfuso. EXtrelut® NT semplifica l’estrazione liquido-liquido sostituendo gli imbuti separatori. L’uso di un singolo passaggio rende l’operazione più efficiente e consente di risparmiare solvente, oltre che materiale e tempo, rispetto alla separazione con imbuto. È sufficiente applicare il campione acquoso al sorbente EXtrelut® NT. Questo si distribuisce sulla matrice chimicamente inerte, agendo come una fase stazionaria. Successivamente, l’eluizione ha luogo utilizzando solventi organici non miscibili con acqua. Tutte le sostanze lipofile vengono estratte dalla fase acquosa alla fase organica.

Supplier: Thermo Fisher Scientific

Poly(vinylidene fluoride) is useful in coatings, film, filter cloth, instrument linings, filtration membranes, pump parts, linings and valves. It is also employed as a material for transducers in devices such as headphones, microphones and sonic detectors. It is also essential for piezoelectric and electrostrictive applications. In addition, it is useful for monofilament fishing lines replacing nylon monofilament. It acts as a standard binder used in the production of composite electrodes for lithium ion batteries. It serves as a high grade insulator for wires, nanomaterials and pressure sensors. It is utilized to make filters which are used to prepare samples for high performance liquid chromatography and other advanced analytical techniques.
Notes: Incompatible with strong oxidizing agents.