21241
Fase stazionaria per GC
phase OV-225, bottle of 5 g
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About This Item
Codice UNSPSC:
23151817
Prodotti consigliati
agenzia
meets requirements for USP G19
Confezionamento
bottle of 5 g
Parametri
0-265 °C temp. range
tecniche
gas chromatography (GC): suitable
Gruppo funzionale matrice
OV-225 phase
Solubilità
acetone: soluble
Tipo di colonna
packed GC
Descrizione generale
Sintetizzata appositamente per risultare più pura, con range di peso molecolare ristretto e senza impurità o catalizzatori in tracce per l′impiego come fase stazionaria per la GC.
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.[1] 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.[2] 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.[3]
Applicazioni
OV-225 on columns is suitable for resolving neutral and amino sugars during chemical analysis using gas chromatograph.[4]
Codice della classe di stoccaggio
12 - Non Combustible Liquids
Classe di pericolosità dell'acqua (WGK)
WGK 3
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Dispositivi di protezione individuale
Eyeshields, Gloves
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Lot/Batch Number
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S J Millar et al.
Infection and immunity, 51(1), 302-306 (1986-01-01)
Two separate species of lipopolysaccharide (LPS) from Bacteroides gingivalis 381 have been isolated. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis demonstrated not only the heterogeneity of each species, but also that they represented high- and low-molecular-weight LPS entities. Although both contained the
Michael O'Keefe
Residue Analysis in Food: Principles and Applications, 187-187 (2000)
James P. Lodge, Jr.
Methods of Air Sampling and Analysis, 98-98 (1988)
David B. Troy, Paul Beringer
Remington: The Science and Practice of Pharmacy, 605-605 (2006)
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