"Merck"

2-Propanol, LiChrosolv®, gradient grade for liquid chromatography, Supelco®

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 enables to minimize the gradient effect of the solvent involved.

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Bromocresol purple ACS, Reag. Ph. Eur., Supelco®

Supplier: Merck

Bromocresol purple ACS, Reag. Ph. Eur., Supelco®

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N-Methyl-2-pyrrolidone (NMP), EMPLURA®, Supelco®

Supplier: Merck

EMPLURA® is our low-cost alternative to high-purity qualities. With EMPLURA® we offer a range of solvents for a plurality of basic applications in non-regulated industries and for less demanding applications, preparative laboratory work and cleaning purposes. EMPLURA® solvents provide adequate specifications with the most important parameters.

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Disodium hydrogen phosphate

Supplier: Merck

Disodium hydrogen phosphate

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Sodium carbonate 0.05 mol/l concentrated aqueous solution, Titrisol®, Supelco®

Supplier: Merck

Sodium carbonate 0.05 mol/l concentrated aqueous solution, Titrisol®, Supelco®

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(±)-2-Nonanol for synthesis, Sigma-Aldrich®

Supplier: Merck

(±)-2-Nonanol for synthesis, Sigma-Aldrich®

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Certipur®, Supelco® Thorium Standard Solution, 10 mg/L Th in dil. Nitric Acid (from Th(NO₃)₄), Standard for ICP

Supplier: Merck

Thorium Standard, 10 mg/L, Certipur®, Supelco®, Thorium, Matrix: Nitric acid dil., Application: ICP standards

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N-Chlorosuccinimide for synthesis, Sigma-Aldrich®

Supplier: Merck

N-Chlorosuccinimide for synthesis, Sigma-Aldrich®

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4-Formylbenzoic acid, Sigma-Aldrich®

Supplier: Merck

4-Formylbenzoic acid, Sigma-Aldrich®

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Titriplex® V (Diethylenetriaminepentaacetic acid) analytical reagent, Supelco®

Supplier: Merck

Titriplex® V (Diethylenetriaminepentaacetic acid) analytical reagent, Supelco®

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Methanol, Uvasol® for spectroscopy, Supelco®

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.