12 Resultat för: "chromolith"

Supplier: Merck

Chromolith® Phenyl HPLC columns offer greater selectivity towards aromatic ring-containing compounds than standard alkyl phases. These columns are ideal for the separation of aromatic compounds, flavonoids, fatty acids, PAH, preservatives, purines and pyrimidines.

Supplier: Merck

Chromolith®, Chromolith® guard cartridge holder, bioinert, 5 mm, for 2 mm int.Ø columns

Supplier: Merck

Chromolith®, Kolonnkopplare, Chromolith®

Supplier: Merck

Cyano columns are generally more polar than traditional alkyl silica columns. The functional groups are highly ordered, reducing steric hindrance for the solute. The modification also allows cation exchange activity, which is higher at neutral pH than in acidic conditions. Chromolith® CN columns are suitable for the separation of alkaloids, oils, flavonoids, glycols, phenols, phthalates, steroids and sulfonamides.

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.

Supplier: Merck

Tillverkade av porösa monolitiska kiselstavar med en bimodal porstruktur, vilket ger hög separationseffektivitet vid lågt mottryck. Kolonnerna har lång livslängd inom pH-intervallet 2,5 till 7,5 samt hög matristolerans och analyshastighet. Teknisk information.

Supplier: Merck

Monolitiska kolonner: en ny era inom kromatografin. Chromolith®-kolonnerna är tillverkade av kisel så befintliga metoder kan enkelt överföras till nya metoder med monolitiska kolonner. Med hjälp av 'Sol-Gel'-teknik kan man tillverka porösa monolitiska kiselstavar. De har en bimodal porstruktur som ger en unik kombination av makroporer och mesoporer.

Supplier: Merck

Porvolym: 2,9 ml/g.

Supplier: Merck

Chromolith® Prep är en högren kiselfas, som får särskilda egenskaper från den bimodala porstruktur. Denna struktur skapas av 'Sol-Gel'-tekniken som ger makroporer och mesoporer. Mesoporerna med en genomsnittsdiameter på 12 nm formar den fina porösa strukturen av kolonnens inre och skapar en stor yta på vilken adsorptionen kan ske.

Supplier: Merck

För snabb nano-LC analyser av proteiner och peptider. Med Chromolith® CapRod® kapillärer kombineras snabbheten hos monolitiska kolonner med känsligheten hos nano-LC som ger snabba och högkänsliga LC/MS-analyser.

Supplier: Merck

These columns have been designed following the high demand for suitable analytical methods for process monitoring and quality control of wide pore biomolecules. Accurate analysis of proteins, antibodies and large peptides requires columns with good permeability, along with better mass transfer and selectivity. In order for size exclusion not to influence the separation, the pore size should be approximately ten times larger than the molecule being analysed.

Supplier: Merck

Merck-kolumner finns i tre format.