(Crossbond® 5% diphenyl/95% dimethyl polysiloxane)
The 5% diphenyl/95% dimethyl polysiloxane stationary phase is the most popular GC stationary phase and is used in a wide variety of applications. All residual catalysts and low molecular weight fragments are removed from the Rtx®-5 polymer, providing a tight mono-modal distribution and extremely low bleed.
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.10 | 0.10 | -60 to 330/350 |
0.10 | 0.40 | -60 to 320/340 |
0.18 | 0.20 | -60 to 330/350 |
0.18 | 0.40 | -60 to 315/330 |
0.25 | 0.10 | -60 to 330/350 |
0.25 | 0.25 | -60 to 330/350 |
0.25 | 0.50 | -60 to 330/350 |
0.25 | 1.00 | -60 to 320/340 |
0.32 | 0.10 | -60 to 330/350 |
0.32 | 0.25 | -60 to 330/350 |
0.32 | 0.50 | -60 to 330/350 |
0.32 | 1.00 | -60 to 330/350 |
0.32 | 1.50 | -60 to 310/330 |
0.32 | 3.00 | -60 to 280/300 |
0.32 | 5.00 | -60 to 260/280 |
0.53 | 0.10 | -60 to 320/340 |
0.53 | 0.25 | -60 to 320/340 |
0.53 | 0.50 | -60 to 310/330 |
0.53 | 1.00 | -60 to 310/330 |
0.53 | 1.50 | -60 to 310/330 |
0.53 | 3.00 | -60 to 270/290 |
0.53 | 5.00 | -60 to 270/290 |
Maximum temperatures listed are for 15- and 30-meter lengths. Longer lengths may have a slightly reduced maximum temperature.
(Crossbond® 100% dimethyl polysiloxane)
Rtx®-1 columns exhibit long lifetime and very low bleed at high operating temperatures. A proprietary synthesis process eliminates residual catalysts that could cause degradation and increase bleed.
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.10 | 0.10 | -60 to 330/350 |
0.10 | 0.40 | -60 to 320/340 |
0.18 | 0.20 | -60 to 330/350 |
0.18 | 0.40 | -60 to 320/340 |
0.25 | 0.10 | -60 to 330/350 |
0.25 | 0.25 | -60 to 330/350 |
0.25 | 0.50 | -60 to 330/350 |
0.25 | 1.00 | -60 to 320/340 |
0.32 | 0.10 | -60 to 330/350 |
0.32 | 0.25 | -60 to 330/350 |
0.32 | 0.50 | -60 to 330/350 |
0.32 | 1.00 | -60 to 320/340 |
0.32 | 1.50 | -60 to 310/330 |
0.32 | 3.00 | -60 to 280/300 |
0.32 | 4.00 | -60 to 280/300 |
0.32 | 5.00 | -60 to 260/280 |
0.45 | 2.55 | -60 to 270/290 |
0.53 | 0.10 | -60 to 320/340 |
0.53 | 0.25 | -60 to 320/340 |
0.53 | 0.50 | -60 to 310/330 |
0.53 | 1.00 | -60 to 310/330 |
0.53 | 1.50 | -60 to 310/330 |
0.53 | 3.00 | -60 to 270/290 |
0.53 | 5.00 | -60 to 270/290 |
0.53 | 7.00 | -60 to 240/260 |
Maximum temperatures listed are for 15- and 30-meter lengths. Longer lengths may have a slightly reduced maximum temperature.
(Crossbond® 20% diphenyl/80% dimethyl polysiloxane)
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.25 | 0.25 | -20 to 300/320 |
0.25 | 0.50 | -20 to 290/310 |
0.25 | 1.00 | -20 to 280/300 |
0.32 | 0.25 | -20 to 300/320 |
0.32 | 0.50 | -20 to 290/310 |
0.32 | 1.00 | -20 to 280/300 |
0.32 | 1.50 | -20 to 270/290 |
0.32 | 3.00 | -20 to 250/270 |
0.53 | 0.25 | -20 to 260/280 |
0.53 | 0.50 | -20 to 260/280 |
0.53 | 1.00 | -20 to 260/280 |
0.53 | 3.00 | -20 to 240/260 |
(Crossbond® 35% diphenyl/65% dimethyl polysiloxane)
An Rtx®-35 column is a popular confirmation column for pesticides and herbicides, in conjunction with an Rtx®-5 or Rtx®-1701 column. The higher phenyl content causes useful elution order and retention time changes.
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.18 | 0.20 | 40 to 300/320 |
0.18 | 0.40 | 40 to 290/310 |
0.25 | 0.25 | 40 to 320 |
0.25 | 0.50 | 40 to 310 |
0.25 | 1.00 | 40 to 290 |
0.32 | 0.25 | 40 to 320 |
0.32 | 0.50 | 40 to 310 |
0.32 | 1.00 | 40 to 290 |
0.32 | 1.50 | 40 to 270/290 |
0.32 | 3.00 | 40 to 250/270 |
0.53 | 0.25 | 40 to 260/280 |
0.53 | 0.50 | 40 to 300 |
0.53 | 1.00 | 40 to 290 |
0.53 | 1.50 | 40 to 280 |
0.53 | 3.00 | 40 to 240/260 |
(Crossbond® 35% diphenyl/65% dimethyl polysiloxane)
An Rtx®-35 column is a popular confirmation column for pesticides and herbicides, in conjunction with an Rtx®-5 or Rtx®-1701 column. The higher phenyl content causes useful elution order and retention time changes.
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.25 | 0.10 | 40 to 320/340 |
0.25 | 0.25 | 40 to 320/340 |
0.25 | 0.50 | 40 to 310/330 |
0.25 | 1.00 | 40 to 290/310 |
0.32 | 0.10 | 40 to 320/340 |
0.32 | 0.25 | 40 to 320/340 |
0.32 | 0.50 | 40 to 310/330 |
0.32 | 1.00 | 40 to 290310 |
0.53 | 0.50 | 40 to 300/320 |
0.53 | 1.00 | 40 to 290 |
0.53 | 1.50 | 40 to 280/300 |
(Crossbond® 100%methylphenyl polysiloxane)
The high thermal stability of Rtx®-50 columns makes possible dual-column analysis with common phases such as Rtx®-1ms or Rtx®-5ms. Between analyses, high temperatures can be used to drive less volatile contaminants off of the column.
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.18 | 0.20 | 40 to 310/330 |
0.18 | 0.40 | 40 to 300/320 |
0.25 | 0.25 | 40 to 300/320 |
0.25 | 0.50 | 40 to 290/310 |
0.25 | 1.00 | 40 to 280/300 |
0.32 | 0.25 | 40 to 300/320 |
0.32 | 0.50 | 40 to 290/310 |
0.32 | 1.00 | 40 to 280/300 |
0.53 | 0.25 | 40 to 280/300 |
0.53 | 0.50 | 40 to 270/290 |
0.53 | 0.83 | 40 to 270/290 |
0.53 | 1.00 | 40 to 260/280 |
0.53 | 1.50 | 40 to 250/270 |
(Crossbond® 65% diphenyl/35%dimethyl polysiloxane)
The Rtx®-65 phase contains the highest phenyl content of any bonded stationary phase available, to improve separation of aromatic compounds through increased phase-analyte interaction. A unique polarity makes these columns ideal for a variety of analyses, from phenols to FAMEs. As a confirmation column for EPA Method 604 phenols, an Rtx®-65 column produces a different elution order, compared to the primary Rtx®-5 column. Rtx®-65 columns elute FAMEs according to equivalent chain length, similar to bonded Carbowax® columns, but the Rtx®-65 phase does not suffer the thermal stability limitations of other polar stationary phases.
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.25 | 0.25 | 50 to 300 |
0.25 | 0.50 | 50 to 280/300 |
0.25 | 1.00 | 50 to 260/280 |
0.32 | 0.25 | 50 to 300 |
0.32 | 0.50 | 50 to 280/300 |
0.32 | 1.00 | 50 to 300 |
0.53 | 0.25 | 40 to 290/300 |
0.53 | 0.50 | 40 to 270/290 |
0.53 | 1.00 | 40 to 250/270 |
(Proprietary Crossbond® phase)
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.18 | 0.18 | 20 to 320/340 |
0.25 | 0.25 | 20 to 320/340 |
0.25 | 0.50 | 20 to 320/340 |
0.32 | 0.25 | 20 to 320/340 |
0.32 | 0.50 | 20 to 320/340 |
0.53 | 0.50 | 20 to 320/340 |
0.53 | 1.00 | 20 to 320/340 |
(Crossbond® carborane/dimethyl polysiloxane)
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.25 | 0.15 | -60 to 380°C |
0.53 | 0.15 | -60 to 380°C |
These columns have been designed specifically to be the best columns available, for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity. In addition to outstanding performance, this combination of column characteristics assures Rxi® columns will have long lifetimes. The Restek chemists also have developed a stable, reproducible manufacturing process, so that Rxi® columns will meet your needs every time you install a new column.
ID (mm) | df(µm) | Temperature limits (°C) |
---|---|---|
0.10 | 0.10 | 40 to 280/320 |
0.25 | 0.25 | 40 to 280/320 |
0.25 | 0.50 | 40 to 280/320 |
0.25 | 1.00 | 40 to 280/320 |
0.32 | 0.25 | 40 to 280/320 |
0.32 | 0.50 | 40 to 280/320 |
0.32 | 1.00 | 40 to 280/320 |
0.53 | 0.25 | 40 to 280/320 |
0.53 | 0.50 | 40 to 280/320 |
0.53 | 0.83 | 40 to 280/320 |
0.53 | 1.00 | 40 to 280/320 |
0.53 | 1.50 | 40 to 280/320 |