HPLC Guard Cartridge VDSpher PUR 100 SIL, 5 µm, 4 x 5 mm, 5 pc/PAK

HPLC Guard Cartridge VDSpher PUR 100 SIL, 5 µm, 4 x 5 mm, 5 pc/PAK

Item number: VDVPE000J040005V
Brand: VDS
2%
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PAK ( 5 pc)

Description

VDSpher PUR 100 SIL is an alternative HPLC column to Purospher STAR Si

Both unmodified and several modified silica gels are available for normal phase (NP) chromatography. This enables a large number of normal phase separations.
The advantages of chemically modified silica gels, which allow rapid equilibration, reproducible, are particularly noteworthy Analyzes despite fluctuating water content in the mobile phase and a problem-free application of gradient methods. Depending on the type of modification, various mechanisms can be used for the separation:

  • SIL: polar interactions, high silanophilic activity
  • Diol: polar interactions, hydrogen bonds, silanophilic activity
  • CN: polar interactions, π-π interactions, hydrophobic interactions, very low silanophilic activity
  • CN-SE: polar interactions, π-π interactions, hydrophobic interactions, no silanophilic activity
  • NH2: polar interactions, hydrophobic interactions, ion exchange, silanophilic activity
  • AP: polar interactions, hydrophobic interactions, ion exchange, silanophilic activity
  • DAP: polar interactions, hydrophobic interactions, ion exchange, silanophilic activity


It should also be taken into account that the silanol groups on the surface of the silica gel are slightly acidic, while amino modifications have a basic effect. Diol and CN, on the other hand, are considered neutral.

More Information

Brand VDS
Column description VDSpher Pur
Package specification Silica
Endcapping no
Inner diameter 4 mm
mode Normal Phase (NP)
Particle Size 5,0 µm
pH Range 2 - 8
Pore size 100 Å
USP number L3
Length 5 mm