The COSMOSIL 5C18-PAQ is the new member of our C18 column family already including the monomeric type MS-II, the polymeric type AR-II. This new column maintains stable retention time even in 100% aqueous mobile phases because the silica is only partially coated with C18 chains. The new polymeric linking style gives a strong acidic resistance to this column.
- Stable retention time in 100% aqueous mobile phase
- Good separation of hydrophilic compounds
- Resistance for acidic mobil phase
- Low carbon content controlled packing material
- Polymeric type linked C18
The figure shows the change of retention time for Thymine with 100% aqueous mobile phase (20mmol/l phosphate buffer pH7). After analyzed 4 times (1 hour), flow of mobile phase were stopped for 1 hour, and then similarly analyzed again. The conventional C18 showed change of retention time, but COSMOSIL 5C18-PAQ mantained stable retention time.
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MATERIAL CHARACTERISTICS
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COSMOSIL 5C18-PAQ
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Silicagel
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high purity porous spherical silica
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Average particle size
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5µm
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Average pore size
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approx. 120Å
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Specific surface area
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approx. 300m2/g
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Stationary phase
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polymeric octadecyl group
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End capping treatment
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near-perfect treatment
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Carbon content
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approx. 11%
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Cosmosil 5C18-PAQ Column
| Item | Catalog | Price ($U.S.) | Buy |
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| 5C18-PAQ – Analytical Guard Column, 4.6 x 10.0 mm | 02484-91 | $206.00 | Add to cart |
| 5C18-PAQ – Analytical Column, 4.6 x 250 mm | 02485-81 | $422.00 | Add to cart |
| 5C18-PAQ – Analytical Column, 4.6 x 150mm | 02486-71 | $391.00 | Add to cart |