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Sigma-Aldrich/GC Stationary Phase/21241/
  • Sigma-Aldrich/GC Stationary Phase/21241/

Sigma-Aldrich/GC Stationary Phase/21241/

價格: ¥2432.00 市場價: 3161.60

貨號: 21241
品牌: Sigma-Aldrich
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    • Properties:

      Related Categories Analytical/Chromatography, GC Stationary Phases, Gas Chromatography (GC), Packed GC Columns and Components
      packaging   bottle of 5 g
      parameter   0-265 °C temp. range
      application(s)   gas chromatography (GC): suitable
      matrix active group   OV-225 phase
      solubility   acetone: soluble
      suitability   suitable for G19

      Description:

      General description

      Synthesized specifically to be purer, of narrow molecular weight range, and without trace catalysts or impurities for use as a GC stationary phase.

      GC methods are divided into two classes depending on the nature of stationary phases; gas-solid chromatography (GSC) and gas-liquid chromatography (GLC). GSC has solid adsorptive material and solute particles are removed from mobile phase by electrostatic forces. GLC has a thin layer of liquid coated or bonded on the surface of an inert particle or on the walls of the column where solute particles are retained in the liquid phase based on their partition coefficients. The primary necessity of a stationary phase is to provide sample separation sustaining phase integrity over a reasonable period of time. It should be stable for the chemical and thermal changes. Selectivity, peak symmetry, analysis time, degree of separation, peak tailing are a few parameters that should be considered in order to choose a stationary phase. OV-225 is a polar siliconised phase. It has 50% methysilicone, 25% cyanopropyl and 25% phenyl-silicone. It is possible to separate aromatic compounds from aliphatic ones containing the same number of carbons.

      Application

      OV-225 on columns is suitable for resolving neutral and amino sugars during chemical analysis using gas chromatograph.

      Safety:

      Personal Protective Equipment 
      Eyeshields, Gloves
      RIDADR 
      NONH for all modes of transport
      WGK Germany 
      3
      Flash Point(F) 
      >399.2 °F
      Flash Point(C) 
      >204 °C
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