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36340 results for "Merck"

36340 Results for: "Merck"

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Palladium(II) nitrate dihydrate for synthesis, Sigma-Aldrich®

Supplier: Merck

Palladium(II) nitrate dihydrate for synthesis, Sigma-Aldrich®

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Polyvinyl alcohol, M.W. ∼200000 for synthesis, partially hydrolysed, Sigma-Aldrich®

Supplier: Merck

Polyvinyl alcohol, M.W. ∼200000 for synthesis, partially hydrolysed, Sigma-Aldrich®

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(±)-Tetrahydrofurfuryl alcohol, Sigma-Aldrich®

Supplier: Merck

(±)-Tetrahydrofurfuryl alcohol, Sigma-Aldrich®

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Barium chloride dihydrate, Supelco®

Supplier: Merck

Barium chloride dihydrate, Supelco®

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tert-Butyldimethylsilyl trifluoromethanesulphonate for synthesis, Sigma-Aldrich®

Supplier: Merck

tert-Butyldimethylsilyl trifluoromethanesulphonate for synthesis, Sigma-Aldrich®

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Buffer solutions, ready to use, referenced at 20 °C, Certipur®, Supelco®

Buffer solutions, ready to use, referenced at 20 °C, Certipur®, Supelco®

Supplier: Merck

Materials for the precise calibration and monitoring of pH meters.

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HPLC columns, LiChroCART®, Purospher® Si

HPLC columns, LiChroCART®, Purospher® Si

Supplier: Merck

Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Lactose monohydrate, Millipore®

Supplier: Merck

Lactose monohydrate, Millipore®

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Ethyldimethyl(2-methoxyethyl)ammoniumtris(pentafluoroethyl)trifluorophosphate, high purity, Sigma-Aldrich®

Supplier: Merck

Ethyldimethyl(2-methoxyethyl)ammoniumtris(pentafluoroethyl)trifluorophosphate, high purity, Sigma-Aldrich®

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HPLC columns, LiChroCART®, Purospher® RP-18e

HPLC columns, LiChroCART®, Purospher® RP-18e

Supplier: Merck

Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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HPLC columns, Chromolith® DIOL

HPLC columns, Chromolith® DIOL

Supplier: Merck

Chromolith® DIOL columns are useful as an intermediate polarity media between C18 and silica. Diol functionalised media is less polar and can have different selectivity. Chromolith® DIOL can be used with a wide range of solvents in both normal and reverse phases. In normal phase mode, the diol phase provides an alternative selectivity compared to silica whilst additionally demonstrating longer retention times that help to obtain separation. In reverse phase mode, compounds such as water-soluble vitamins, sugars or amino acids are easily baseline separated using simple mobile phases. Chromolith® DIOL columns have long lifetimes within pH range of 2,5 to 7,5, high matrix tolerance and speed of analysis.

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3-Oxoglutaric acid for synthesis, Sigma-Aldrich®

Supplier: Merck

3-Oxoglutaric acid for synthesis, Sigma-Aldrich®

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Reagents for Karl Fischer titrations, Aquastar®, Supelco®

Reagents for Karl Fischer titrations, Aquastar®, Supelco®

Supplier: Merck

The Aquastar® range is designed to provide reagents for the determination of water by Karl Fischer titration of a wide range of substrates and by a variety of methodologies. These include reagents for one- or two-component systems; combined coulometric reagents; solvents for oils and fats; reagents and solvents for determination of water in ketones and aldehydes. Calibration standards are also available.

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(±)-Camphene mixture of isomers for synthesis, Sigma-Aldrich®

Supplier: Merck

(±)-Camphene mixture of isomers for synthesis, Sigma-Aldrich®

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Alcian blue solution used in nuclear staining, for histology, Sigma-Aldrich®
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HPLC columns, Purospher® STAR Phenyl

HPLC columns, Purospher® STAR Phenyl

Supplier: Merck

Purospher® STAR Phenyl HPLC columns show an enhanced selectivity compared to standard alkyl phases. They are the first alternative to RP-8 or RP-18 selectivities for separation of aromatic compounds, fatty acids, purines and pyrimidines due to π-π interactions. The new Purospher® STAR Phenyl columns are based on high purity silica particles providing symmetrical peaks for basic compounds, high stability and excellent reproducibility.

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Thiophenol for synthesis, Sigma-Aldrich®

Supplier: Merck

Thiophenol for synthesis, Sigma-Aldrich®

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Polytetrahydrofuran, M.W. 1000 stabilised for synthesis, Sigma-Aldrich®

Supplier: Merck

Polytetrahydrofuran, M.W. 1000 stabilised for synthesis, Sigma-Aldrich®

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pH indicator strips, MQuant®, Supelco®

pH indicator strips, MQuant®, Supelco®

Supplier: Merck

These test strips contain special indicator dyes that are covalently bound to the reagent papers which are then adhered to the plastic strips.

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Bromophenol blue ACS, Reag. Ph. Eur., Supelco®

Supplier: Merck

Bromophenol blue ACS, Reag. Ph. Eur., Supelco®

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HPLC columns, LiChroCART®, LiChrospher® 100 RP-8e

HPLC columns, LiChroCART®, LiChrospher® 100 RP-8e

Supplier: Merck

Stainless steel LiChroCART® cartridges are available with LiChrospher® sorbents. Ideal for separation of compounds under basic eluents.

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Buffer, TBE solution 10X concentrate (TRIS-borate-EDTA buffer), Millipore®

Supplier: Merck

Running Buffer, TBE buffer solution 10X concentrate (TRIS-borate-EDTA buffer)

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HPLC columns, LiChroCART®, LiChrospher® Si 60

HPLC columns, LiChroCART®, LiChrospher® Si 60

Supplier: Merck

Stainless steel LiChroCART® cartridges are available with LiChrospher® sorbents. Ideal for separation of compounds under basic eluents.

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Water-free mounting medium, Neo-Mount®

Water-free mounting medium, Neo-Mount®

Supplier: Merck

Water-free mounting media, such as Neo-Mount®, should be used for permanent mounting and long-term storage of samples. Slides processed in pathologyl laboratories need to be stored up to 10 years, whereby the staining results need to be stable and fading-out is not acceptable. Neo-Mount®, anhydrous mounting medium for microscopy is an extremely colour-stable mounting medium for microscopy, which is produced with solvents based on mixtures of aliphatic hydrocarbons. It contains an aromatic-free substitute for xylene, thus, Neo-Mount® needs to be combined with Neo-Clear® exclusively. Xylene must be avoided in the mounting step, as it will cause the slides to become cloudy and streaked. In addition, by placing the dehydrated slides on filter paper for approx. 1 minute prior to mounting, any excess Neo-Clear® should be circumvented, as air bubbles might arise under the cover slip. The same pre-condition should also be met when mounting specimens using cover slip machines; in this area, Neo-Clear® can be most efficiently eliminated by incubating the slides for 1 minute in an empty slide rack.

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Boron standard solution, 1000 mg/L B in water (from B(OH₃)) Certipur® standard for AAS, Supelco®

Supplier: Merck

Boron Standard, 1000 mg/L, Certipur®, Supelco®, Boron, Matrix: H₂O, Application: AAS standards

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Ion chromatography Multi-Element standards, Supelco®

Ion chromatography Multi-Element standards, Supelco®

Supplier: Merck

All ion chromatography standards are traceable to NIST standard reference materials.

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Potassium sulphide (K2Sx), EMSURE® for analysis, Supelco®

Supplier: Merck

Potassium sulphide (K2Sx), EMSURE® for analysis, Supelco®

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Mesitylene for synthesis

Supplier: Merck

Mesitylene for synthesis

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trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid monohydrate for synthesis, Sigma-Aldrich®

Supplier: Merck

trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid monohydrate for synthesis, Sigma-Aldrich®

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Ethyl acetate, LiChrosolv® for HPLC, Supelco®

Ethyl acetate, LiChrosolv® for HPLC, 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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