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More about chromatography

Rxi-35sil MS

Rxi® Capillary GC ColumnsGC column

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
  • Organochlorine pesticides
  • PCB congeners or Aroclor mixes
  • Herbicides
  • Pharmaceuticals
  • Sterols
  • Rosin acids
  • Phtalate esters

Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.25 0.25 -60 to 340/360
0.32 0.25 -60 to 340/360
0.53 0.50 -60 to 320/340

Rxi-624Sil MS

Rxi® Capillary GC ColumnsGC column

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

The Rxi®-624Sil MS stationary phase

  • Excellent peak shape for a wide range of compounds, including acidic and basic compounds.
  • Highly selective for residual solvents, great choice for USP<467>.
Applications
  • Residual Solvents

Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.18 1.00 -60 to 300/320
0.25 1.40 -60 to 300/320
0.32 1.80 -60 to 300/320
0.53 3.00 -60 to 280/300

Rxi-5 HT

GC columnRxi® 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
  • 40% longer lifetime from specially designed fused silica tubing
  • Columns processed for high temperature applications
Applications
  • Diesel Fuels
  • Motor Oils
  • High Boiling Petroleum Products
  • Polymers/Plastics
  • High Molecular Weight Waxes
  • Simulated Distillation Methods
  • Long-chained Hydrocarbons
  • Triglycerides
Temperature limits
ID (mm) df(µm) Temperature limits* (°C)
0.25 0.10 -60 to 400
0.25 0.25 -60 to 400
0.32 0.10 -60 to 400
0.32 0.25 -60 to 400
0.53 0.15 -60 to 400

* Column is capable of going to 430°C, but column lifetime will be reduced.

forte BPX90

NE(90% Cyanopropyl Polysilphenylene-siloxane)

  • High Polarity Phase.
  • Low bleed, midified silphenylene siloxane backbone for high thermal stability.
  • Unigue phase from SGE.
  • Ideal column for second dimension 2D GC systems.
Applications:
  • cis/trans and Positional Isomers FAMEs
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.25 0.25 70 to 280
0.32 0.50 70 to 280

forte BP20

NE(Polyethylen glycol phase)

  • High polarity phase.
  • Excelent separation of aromatics isomers as xylenes.
Applications:
  • Alcohols, aldehydes, esters and ketones
  • BTEX
  • Solvents
  • FAMEs
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.10 0.10 20 to 260/280
0.22 0.25 20 to 260/280
0.25 0.25 20 to 260/280
0.25 0.50 20 to 260/280
0.32 0.25 20 to 260/280
0.32 0.50 20 to 260/280
0.32 1.00 20 to 240/260
0.53 0.50 20 to 260/280
0.53 1.00 20 to 240/260
0.53 2.00 20 to 240/260

forte BP21 (FFAP)

NE(Nitroterephthalic acid (TPA) modified Polyethylene Glycol)

  • High polarity phase.
Applications:
  • Free fatty acids
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.22 0.25 35 to 240/250
0.25 0.25 35 to 240/250
0.32 0.25 35 to 240/250
0.53 0.50 35 to 240/250
0.53 1.00 35 to 240/250

forte BP10 (1701)

NE(14% Cyanopropylphenyl Polysiloxane)

  • Moderately polarity phase.
  • This phase has been selected with a polarity suited for the separation of organochlorine pesticides listed in the EPA 608 and 8081 methods.
Applications:
  • Organochlorine pesticides
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.22 0.25 -20 to 280/300
0.25 0.25 -20 to 280/300
0.25 1.00 -20 to 280/300
0.32 0.25 -20 to 280/300
0.32 0.50 -20 to 280/300
0.32 1.00 -20 to 280/300
0.53 0.50 -20 to 280/300

forte BP225

NE(50% Cyanopropylphenyl Polysiloxane)

  • Moderately polarity phase.
Applications:
  • FAMEs
  • Carbohydrates
  • Neutral sterols
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.22 0.25 40 to 230/260
0.32 0.25 40 to 230/260
0.53 0.50 40 to 230/260

forte BPX-Volatiles

NE(Cyanopropylphenyl Polysiloxane)

  • A polar phase used for EPA volatile organics analysis (EPA 624, SW-846 8240/8260), alcohol analysis and for USP G43.
Applications:
  • Volatiles
  • Alcohols
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.18 1.00 0 to 290/300
0.25 1.40 0 to 290/300
0.32 1.80 0 to 290/300
0.53 3.00 0 to 290/300

forte BP624

NE(Cyanopropylphenyl Polysiloxane)

  • A polar phase used for EPA volatile organics analysis (EPA 624, SW-846 8240/8260), alcohol analysis and for USP G43
Applications:
  • Volatiles
  • Alcohols
Temperature limits
ID (mm) df(µm) Temperature limits (°C)
0.22 1.20 0 to 230/240
0.25 1.40 0 to 230/240
0.32 1.80 0 to 230/240
0.53 3.00 0 to 230/240