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Cosmosil and Cosmogel HPLC columns and packing materials

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5C8-MS, C4-MS, TMS-MS Cosmosil Columns

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These COSMOSIL columns use packing materials with different alkyl chains such as C8 (octyl), C4 (butyl) and TMS (trimethyl). As the length of alkyl chain shortens, the hydrophobic interaction becomes weaker.
Owing to the near-perfect end capping treatment and very low level of free silanol compared to the C18 columns, COSMOSIL alkyl-chained columns can be used widely for the general analysis of compounds including those for which C18 columns produce long retention times.
Material characteristics

5C8-MS 5C4-MS 5TMS-MS
Silica gel high purity pherical porous silica
Average particle size 5m
Averasge pore size approx. 120
Specific surface area approx. 300m/g
Stationary phase octory group butyl group trimethyl group
End capping treatment near-perfect treatment
Carbon content approx. 10% approx. 7% approx. 5%
Behavior of polar compounds
For the analysis of non-polar compounds such as benzene and toluene, the column shows weaker retention as the length of alkyl chain becomes shorter.
The retention increases for polar compounds such as acetophenone and methyl benzoate.
Ordering information

COSMOSIL 5C8-MS
PRODUCT NAME SIZE CODE No. END-FITTING
COSMOSIL 5C8-MS Guard Column 4.6mmI.D.10mm 38151-31 Waters type
10mmI.D.20mm 38152-21
COSMOSIL 5C8-MS Packed Column 4.6mmI.D.50mm 38153-11
4.6mmI.D.100mm 38154-01
4.6mmI.D.150mm* 38155-91
4.6mmI.D.250mm* 38156-81
6mmI.D.150mm 38157-71
6mmI.D.250mm 38158-61
COSMOSIL 5C8-MS Packed Column 10mmI.D.250mm 38159-51
20mmI.D.250mm* 38160-11
COSMOSIL 5C4-MS
PRODUCT NAME SIZE CODE No. END-FITTING
COSMOSIL 5C4-MS Guard Column 4.6mmI.D.10mm 38161-01 Waters type
10mmI.D.20mm 38162-91
COSMOSIL 5C4-MS Packed Column 4.6mmI.D.50mm 38163-81
4.6mmI.D.100mm 38164-71
4.6mmI.D.150mm* 38165-61
4.6mmI.D.250mm* 38166-51
6mmI.D.150mm 38167-41
6mmI.D.250mm 38168-31
COSMOSIL 5C4-MS Packed Column 10mmI.D.250mm 38169-21
20mmI.D.250mm* 38170-81
COSMOSIL 5TMS-MS
PRODUCT NAME SIZE CODE No. END-FITTING
COSMOSIL 5TMS-MS Guard Column 4.6mmI.D.10mm 38171-71 Waters type
10mmI.D.20mm 38172-61
COSMOSIL 5TMS-MS Packed Column 4.6mmI.D.50mm 38173-51
4.6mmI.D.100mm 38174-41
4.6mmI.D.150mm* 38175-31
4.6mmI.D.250mm* 38176-21
6mmI.D.150mm 38177-11
6mmI.D.250mm 38178-01
COSMOSIL 5TMS-MS Packed Column 10mmI.D.250mm 38179-91
20mmI.D.250mm* 38180-51
*Screw in type column is available.

 

 

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