Product code PV12S052546WT
Overal raiting

YMC-Pack PVA-Sil

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PVA-Sil is prepared from a 5 micron 12nm silica support which is bonded with a monomolecular polymer coating of vinyl alcohol. The polymerised PVA completely covers both external and internal surfaces of the silica support, protecting it against aggressive, high pH buffers and solvents.

Features:

  • bonded phase alternative to silica for normal phase applications
  • vinyl alcohol polymerised silica support
  • consistent surface activity, unaffected by water
  • excellent for packed column supercritical fluid chromatography

PVA-Sil, which possesses a polyvinyl alcohol (PVA) surface chemistry, is an excellent alternative to silica gel or other polar bonded phases which are used in normal phase chromatography. In many situations it exhibits better performance characteristics and a unique selectivity and can often resolve compounds that behave poorly on silica. The alcohol functionality present on PVA-Sil is better suited for troublesome compounds, such organic bases, than acidic silanols present in unbonded silica.
Since PVA-Sil is a bonded stationary phase, it can be washed with solvents of any polarity, from hexane through water, without altering the surface activity. Therefore selectivity, retention and resolution are reproducible regardless of the column’s previous history. This is not true of bare silica, which easily becomes completely deactivated following the introduction of even small quantity of water.
 

Specification Compare to others

YMC 120
YMC-Pack PVA-Sil 2.0 -
Normal-Phase N/A
Silica/ Polyvinyl alcohol N/A
4.6 N/A
250 N/A
5.0 N/A

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