10870 Résultats pour : "nmr solvent bdh"

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

Supplier: Merck

For applications requiring compatibility with solvents, this Millipore stirred cell is available in two sizes. Certain aldehydes, ketones (e.g., acetone) and aliphatic ethers/esters may reduce the life of the fluorocarbon O-rings.

Supplier: Apollo Scientific

Alternative solvent to benzene which is less toxic.

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

Supplier: Greiner Bio-One

COC, clear, non sterile, without lid. Made of solvent resistant cycloolefin, these microplates are characterised by good chemical resistance to polar solvents, such as DMSO, and alcohols. They are designed for acoustic liquid handling.

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

Supplier: Merck

Accurate analytic results in UV/Vis and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol® solvents range has been specially designed for spectroscopy and other applications requiring solvents of the highest spectral purity. The refinement process allows a greater degree of security in applications and avoids misinterpretation of analytical results caused by traces of UV, IR and fluorescence contamination. Uvasol® solvents offer best UV transmittance. In all specifications the minimum transmittance for five typical wavelengths are identified. Furthermore the transmittance is specified in accordance with Reag. Ph. Eur. and ACS.

Supplier: BUCHI

Extracteur, Automatic, Solvent beaker, standard

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

Supplier: SIGMA ALDRICH MICROSCOPY

Certified for use in the Stoval and Black method for demonstrating Negri bodies in the central nervous system of rabid animals.

Supplier: Avantor Fluid Handling

Ideal for contamination-free removal of organic solvents.

Supplier: VWR Chemicals

Bruker organic solvent for use with MALDI Biotyper®.

Supplier: VWR Chemicals

SPECTRONORM solvents have extensive specifications to meet the highly demanding requirements of UV applications.

Supplier: Merck

With their high degree of UV transmittance, low particle count, low acidity and alkalinity and low evaporation residue level, LiChrosolv® solvents are ideal for reproducible separations. Since separations are normally carried out under gradient conditions in analytical HPLC, we offer solvents in 'gradient grade' as well as 'isocratic grade'. This minimises the gradient effect of the solvent involved.

Supplier: VWR Chemicals

n-Heptane ≥99%, GPR RECTAPUR®

Supplier: VWR Chemicals

n-Heptane ≥99.0%, PESTINORM® Supra Trace pour l'analyse des traces organiques

Supplier: Avantor

n-Heptane, BAKER ANALYZED® pour analyse des résidus de pesticides, J.T.Baker®

Supplier: Sartorius

This syringe filter holder is made from PTFE. It is well suited for particle removal from samples and reagents for analytical methods, such as NMR samples as it is unaffected by chemicals and contains no trace elements which could be released into the liquid being filtered.

Supplier: Thermo Fisher Scientific

n-Heptane, anhydre, sur tamis moléculaires

Supplier: Thermo Fisher Scientific

n-Heptane ≥96%, qualité environnementale for environmental analysis

Supplier: Merck

Solvent guide needles, PTFE, Pour: 12/24-port manifold

Supplier: Merck

Triclosan-methyl has been used as antimicrobial agent in assay as positive controls in the isolation and identification of active antimicrobial compounds from E. linza algae extract, which was analysed using reversed phase high performance liquid chromatography method (RP-HPLC) and gas chromatography method (GC) coupled with mass spectroscopy, and further confirmed by nuclear magnetic resonance studies (NMR).

Supplier: Avantor

n-Heptane ≥99%, ULTRA RESI-ANALYZED® pour analyse des résidus organiques, J.T.Baker®

Supplier: Avantor

n-Heptane, BAKER ANALYZED®, Réactif de Laboratoire, J.T.Baker®

Supplier: Saint Gobain Life Sciences

Longest flex life of any organic solvent resistant tubing.

Supplier: MACRON AVANTOR BRAND

n-Heptane ≥99.0% (par GC, corrigé de la teneur en eau), AR®, Macron Fine Chemicals™

Supplier: Thermo Fisher Scientific

n-Heptane 99+% pour l'analyse des résidus, pour analyse de traces d'hydrocarbures polyaromatiques

Supplier: TCI

n-Heptane ≥99.0% (par GC) pour spectrophotométrie