The polarity of the solute is crucial for the choice of stationary compound, which in an optimal case would have a similar polarity than the solute.
dot-red GC columns are available in High, Low and intermediate polarities.
Common dot-red stationary phases include Methyl siloxane, Methyl polysiloxane, Cyanpropyl, phenyl, Polyethylene glycol (wax) and Cyanpropyl polysiloxane.
For an overview of GC Capillary Columns please see here
Cyclodextrins are oligosaccharides formed from the bonding of six to twelve glucopyranose (sugar) units into a cyclic, cone shaped structure. The number of sugar units varies from 6 to 12. Three sizes are commonly used in the manufacture of commercially available GC phases: alpha, beta & gamma corresponding to 6, 7 and 8 glucopyranose units …more
100% Polyethylene glycol (low bleed)
DR-WAX is a High polarity 100% Polyethylene glycol (low bleed) phase for GC columns
DR-WAX phase is High Polarity
DR-WAX phase GC columns are equivalent to:
Agilent/J&W: DB-Wax, HP-Wax
Alltech (Grace): AT-Wax ms
Phenomenex: ZB-Wax
Quadrex: 007-CW
Restek: Stabilwax
SGE: BP-20
Supelco: OmegaWax
Varian: CPWax 52CB
100% Cyanpropyl polysiloxane
DR-10 FAME is a Very High polarity 100% Cyanpropyl polysiloxane phase for GC columns
DR-10 FAME phase is Very High Polarity
DR-10 FAME phase GC columns are equivalent to:
Agilent/J&W: HP-88
Alltech (Grace): AT-Silar
Restek: Rtx-2330
SGE: BPX-70
Supelco: SP-2330, SP-2560, Sp-2331, SP-2380
Varian: CPSil 88
100% Polyethylene glycol, acid modified
DR-FFAP is a High polarity 100% Polyethylene glycol, acid modified
phase for GC columns
DR-FFAP phase is High Polarity
DR-FFAP phase GC columns are equivalent to:
Agilent/J&W: DB-FFAP
Alltech (Grace): AT-1000
Quadrex: 007-FFAP
Restek: Stabilwax-DA
SGE: BP-21
Supelco: SPB-1000
Varian: CPWax 58CB
100% Polyethylene glycol
DR-WAX is a High polarity 100% Polyethylene glycol
phase for GC columns
DR-WAX phase is High Polarity
DR-WAX phase GC columns are equivalent to:
Agilent/J&W: DB-Wax, HP-Wax
Alltech (Grace): AT-Wax
Phenomenex: ZB-Wax
Quadrex: 007-CW
Restek: Rtx-Wax
SGE: BP-20
Supelco: OmegaWax
Varian: CPWax 52CB
50% Cyanopropyl, 50% Methyl polysiloxane
DR-50 is a Medium polarity 50% Cyanopropyl, 50% Methyl polysiloxane
phase for GC columns
DR-50 phase is Medium Polarity
DR-50 phase GC columns are equivalent to:
New Column No Equivalent Columns.
25% Cyanopropyl, 25% Phenyl, 50% Methyl polysiloxane (Low Bleed)
DR-225ms is a Medium polarity 25% Cyanopropyl, 25% Phenyl, 50% Methyl polysiloxane low bleed
phase for GC columns
DR-225ms phase is Medium Polarity
DR-225ms phase GC columns are equivalent to:
New Column No Equivalent Columns.
25% Cyanopropyl, 25% Phenyl, 50% Methyl polysiloxane
DR-225 is a Medium polarity 25% Cyanopropyl, 25% Phenyl, 50% Methyl polysiloxane
phase for GC columns
DR-225 phase is Medium Polarity
DR-225 phase GC columns are equivalent to:
Agilent/J&W: DB-225, HP-225
Alltech (Grace): AT-225
Quadrex: 007-225
Restek: Rtx-225
SGE: BP-225
Varian: CPSil 43CB
100% Trifluoropropyl methyl polysiloxane
DR-200 is a Medium polarity 100% Trifluoropropyl methyl polysiloxane phase for GC columns
DR-200 phase is Medium Polarity
DR-200 phase GC columns are equivalent to:
Agilent/J&W: DB-200, DB-210
Alltech (Grace): AT-210
Quadrex: 007-210
Restek: Rtx-200
Supelco: SP-2401
Varian: VF-200 ms
50% Phenyl, 50% Methyl polysiloxane (Low Bleed)
DR-17ms is a Medium polarity 50% Phenyl 50% Methyl polysiloxane low bleed phase for GC columns
DR-17ms phase is Medium Polarity