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Welch Materials Xtimate C18 Columns

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems across a wide pH range and temperature conditions. Even under the most stringent conditions, it offers highly stable performance and a longer lifespan, with a longer service life than regular C18 columns under standard conditions.

Xtimate HPLC column derives its outstanding performance from a special hybrid partic le based technique, which coats a unique 5nm organic/inorganic polymer layer on the silica surface, so that the pH range is extended to 1.0-12.5. Xtimate column is designed for HPLC method development. Regardless of the types of mobile phase or high temperature, Xtimate HPLC column always has stable performance and long lifetime.

X features of Xtimate column

  • eXtra pH range: wide pH range from 1.0 to 12.5, excellent peak shape for strong bases
  • eXtra column lifetime: 5 times of similar product such as Gemini
  • eXtra performance: column efficiency of 5μm columns is as high as 90000/m, 2-3 times of that of Xterra
  • eXtra care from Welch: enjoy excellent pre-sales and after-sales service from Welch


Item Name Product Image Price

Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 100 mm - 00101-21030

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 100 mm - 00101-21030 £488.00
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 125 mm - 00101-21031

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 125 mm - 00101-21031 £528.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 150 mm - 00101-21032

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 150 mm - 00101-21032 £520.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 200 mm - 00101-21033

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 200 mm - 00101-21033 £528.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 250 mm - 00101-21034

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 250 mm - 00101-21034 £544.00
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 30 mm - 00101-21027

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 30 mm - 00101-21027 £448.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 300 mm - 00101-21035

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 300 mm - 00101-21035 £584.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 50 mm - 00101-21028

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 50 mm - 00101-21028 £464.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 75 mm - 00101-21029

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.0 x 75 mm - 00101-21029 £480.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 100 mm - 00101-21039

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 100 mm - 00101-21039 £488.00
New
Buy Now

Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 125 mm - 00101-21040

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 125 mm - 00101-21040 £528.00
New
Buy Now

Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 150 mm - 00101-21041

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 150 mm - 00101-21041 £520.00
New
Buy Now

Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 200 mm - 00101-21042

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 200 mm - 00101-21042 £528.00
New
Buy Now

Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 250 mm - 00101-21043

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 250 mm - 00101-21043 £544.00
New
Buy Now

Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 30 mm - 00101-21036

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 30 mm - 00101-21036 £440.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 300 mm - 00101-21044

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 300 mm - 00101-21044 £584.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 33 mm - 11101-21036

P/N: 11101-21036
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 33 mm - 11101-21036 £440.00
New
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Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 50 mm - 00101-21037

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 50 mm - 00101-21037 £464.00
New
Buy Now

Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 75 mm - 00101-21038

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 4.6 x 75 mm - 00101-21038 £480.00
New
Buy Now

Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 6.0 x 150 mm - 00101-21058

Xtimate C18 column utilizes Welch's patented organic-inorganic hybrid surface technology to modify the silica gel matrix. Specifically designed for liquid chromatography method development, it allows the use of a variety of mobile phase systems...
Welch Materials Xtimate C18 HPLC Column, 5 µm, 120 Å, 6.0 x 150 mm - 00101-21058 £696.00
New
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