0
0
Your basket is empty...
Chromatography
Rtx-1
(Crossbond® 100% dimethyl polysiloxane)
- Nonpolar phase.
- Equivavelnt to USP G1.G2,G38 phases.
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.
Applications
- Solvent impurities
- PCB congeners or (e.g.) Aroclor mixes
- Simulated distillation
- Drugs of abuse
- Gases
- Natural gas odorants, sulfur compounds
- Essential oils
- Hydrocarbons
- Semivolatiles
- Pesticides
- Oxygenates
| 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.
Rtx-20
(Crossbond® 20% diphenyl/80% dimethyl polysiloxane)
- Low to midpolarity low bleed phase.
- Equivalent to USP G28, G32 phases.
- Rtx®-20 columns are available with Integra-Guard™ built-in guard column.
Applications
- Volatile and flavor compounds
- Alcoholic beverages
| 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 |
Rtx-35
(Crossbond® 35% diphenyl/65% dimethyl polysiloxane)
- Midpolarity low bleed phase.
- Equivalent to USP G42 phase.
- Rtx®-35 columns are available with Integra-Guard™ built-in guard column.
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.
Applications
- Organochlorine pesticides
- PCB congeners or Aroclor mixes
- Herbicides
- Pharmaceuticals
- Sterols
- Rosin acids
- Phtalate esters
| 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 |
Rtx-35 MS
(Crossbond® 35% diphenyl/65% dimethyl polysiloxane)
- Midpolarity phase.
- Column specifically tested for low bleed performance.
- Equivalent to USP G42 phase.
- Rtx®-35 columns are available with Integra-Guard™ built-in guard column.
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.
Applications
- Organochlorine pesticides
- PCB congeners or Aroclor mixes
- Herbicides
- Pharmaceuticals
- Sterols
- Rosin acids
- Phtalate esters
| 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 |
Rtx-50
(Crossbond® 100%methylphenyl polysiloxane)
- Midpolarity phase.
- Equivalent to USP G3 phase.
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.
Applications
- Organochlorine pesticides
- Herbicides
- Rosin acids
- Sterols
- Triglycerides
- Phtalate esters
| 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 |
Rtx-65
(Crossbond® 65% diphenyl/35%dimethyl polysiloxane)
- Mid to high polarity phase.
- Equivalent to USP G17 phase.
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.
Applications
- Phenols
- Fatty acids
| 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 |
Rtx-440
(Proprietary Crossbond® phase)
- Intermediate polarity phase.
- Low bleed
- High-resolution columns with unique selectivity.
- Ideal for low/trace level analysis.
Applications
- Pesticides
- PAHs
- Semivolatiles
| 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 |
Stx-500
(Crossbond® carborane/dimethyl polysiloxane)
- Stx™ is used for columns that have been deactivated using Restek´s Siltek® deactivation.
- Low bleed - ideal for GC/FPD, GC/NPD or GC/MS analyses.
Applications
- Brominated flame retardans
- Coplanar PCB congeners
- other anates with high boiling temperatures
| ID (mm) | df(µm) | Temperature limits (°C) |
|---|---|---|
| 0.25 | 0.15 | -60 to 380°C |
| 0.53 | 0.15 | -60 to 380°C |
Rxi-17
Rxi® Capillary GC Columns
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.
Benefits of Rxi® columns
- Ultra-low bleed
- Exceptional inertness
- Reproducible performance, column after column
Applications
- Pesticides
- Herbicides
- Rosin acids
- Phthalate esters
- Triglycerides
- Sterols
| 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 |
Rxi-XLB
(low-polarity proprietary phase)
Rxi® Capillary GC Columns
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.
Benefits of Rxi®-XLB columns
- Ultra-low bleed
- Exceptional inertness
- Unique selectivity
- Reproducible performance, column after column
Improvements in polymer synthesis and tubing deactivation enable us to make inert, stable Rxi®-XLB columns especially well-suited for analyzing active, high molecular weight compounds with sensitive GC/MS systems, including ion trap detectors. Excellent efficiency, coupled with inertness, low bleed, and high thermal stability, make Rxi®-XLB columns ideal for analyzing semivolatile compounds in drinking water (e.g., US EPA Method 525).
Applications
- Pesticides
- PCB congeners or (e.g.) Aroclor mixes
- PAHs
| ID (mm) | df(µm) | Temperature limits (°C) |
|---|---|---|
| 0.10 | 0.10 | 30 to 340/360 |
| 0.18 | 0.18 | 30 to 340/360 |
| 0.20 | 0.33 | 30 to 340/360 |
| 0.25 | 0.10 | 30 to 340/360 |
| 0.25 | 0.25 | 30 to 340/360 |
| 0.25 | 0.50 | 30 to 340/360 |
| 0.25 | 1.00 | 30 to 340/360 |
| 0.32 | 0.10 | 30 to 340/360 |
| 0.32 | 0.25 | 30 to 340/360 |
| 0.32 | 0.50 | 30 to 340/360 |
| 0.32 | 1.00 | 30 to 340/360 |
| 0.53 | 0.50 | 30 to 320/340 |
| 0.53 | 1.50 | 30 to 320/340 |