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Cosmosil and Cosmogel HPLC columns and packing materials

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Guard Columns and Cartridges

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The use of guard columns to protect both analytical and preparative columns is highly recommended.
Packing materials, which are identical to that used in analytical and preparative columns, are packed in the COSMOSIL guard columns. As the result, the COSMOSIL guard columns do not contribute to any decrease in the performance of the main column.
Please contact the manufacturer directly or your local distributor for packing materials and column sizes not specified below.

Example of using preparative guard column

Guard columns are essential for preparative columns where a large quantity of sample is injected under high flow rates. Large sample size and extraneous materials in the sample may rapidly degrade a preparative column. By connecting a guard column with the preparative column, the main reparative column is protected and its life can be prolonged.
Rough purification with the guard column is recommended in situations where the object peak is well separated from impurity peaks.
Ordering information
PRODUCT NAME SIZE CODE No. END-FITTING
COSMOSIL 5C18-MS-II Guard Column 4.6mmI.D.10mm 38014-31 Waters type
10mmI.D.20mm 38016-11
COSMOSIL 5C18-AR-II Guard Column 4.6mmI.D.10mm 38141-61
10mmI.D.20mm 38148-91
COSMOSIL 5C18-AR-300 Guard Column 4.6mmI.D.10mm 37910-11
10mmI.D.20mm 37965-11

 

Cartridge Columns

COSMOSIL GUARD CARTRIDGE can protect your analytical column by the cost of about 1/5 of current Guard column.
For guard cartridges, the same high performance packing material as for the analytical columns are adopted, and packed by an original method. Therefore the analytical column is protected for long time and the performance is not compromised.

Note
  • A special holder is necessary for the guard cartridge.
  • Please order the holder also at the first use.
  • Please refer to the manual appended to the commodity for details of use.
Ordering information
PRODUCT NAME SIZE CODE No. END-FITTING
COSMOSIL 5C18-AR-II GUARD CARTRIDGE 4.6mm I.D.10mm(3pieces) 38008-89
COSMOSIL 5C18-MS-II GUARD CARTRIDGE 38015-89
COSMOSIL 5C18-MS GUARD CARTRIDGE 38007-99
COSMOSIL GUARD CARTRIDGE HOLDER
38009-79 Waters type
 
 

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