• VertiPak™ C4 SPE is moderately non-polar, hydrophobic
sorbent, manufactured using a trifunctional silane and
endcapped to reduce the polar secondary interactions
associated with surface silanol groups.
• Less retentive than VertiPak™ C8 based on non-polar
interaction and slightly more polar than C18 or C8 due to
short chain length of C4.
• Typical applications include compounds which are too
strongly retained on C18 or C8 e.g. analgetics in blood.
• Tube format is available in 7 tube sizes.
• Cartridge format is available in 300mg and 600mg size.
• Tubes or cartridges are packaged in zip sealing bag
protective from moisture and light.
• Includes a Performance report including the QC results,
lot
chromatogram and lot recovery test.
| Chemical structure |

Chemical structure of C4 (Butyl) silane and trimethyl silyl
group, covalently bonded to the surface of a silica particle. |
| Specifications |
| Phase |
C4 (Butyl) |
|
Irregular-shaped Silica
|
Particle Size (µm) |
45-65
|
Pore Size (Å)
|
60-80
|
Surface Area (m2/g) |
450-550 |
Carbon Load (%)
|
8 |
Endcap
|
Yes |
pH Stability |
2-9 |
|