Key Benefits of Inertsil ODS-EP (C18 with Embedded Polar Group) - Part of the Advanced Inertsil 3-Series of Phases
   Polar functional group embedded between silica and C18 chain
   Unique selectivity compared with standard C18 columns
   Compatible with 100% aqueous eluents
   Excellent peak shape for acid and basic compounds      Click here for Inertsil ODS-EP ordering information
   Ideal for LC/MS applications
     
 Inertsil ODS-EP contains a polar functional group embedded between the silica surface and the C18 group. The embedded polar group makes the C18 phase stable in 100% aqueous eluents without "phase collapse."  This phase is also extremely "base deactivated" and provides superior peak shape for acids and bases in organic eluents as well as acidified eluents typically used in LC/MS.

Inertsil ODS-EP is available in 5 micron particle size in column configurations ranging from capillary to 50mm ID preparative sizes.

The Inertsil 3-series represents a major advance in performance over the original Inertsil 2-Series. Inertsil 3-Series phases, including ODS-3, ODS-3V, ODS-P, ODS-SPRINT , C8-3, Ph-3, CN-3, NH2, Diol, and SIL-100Å, are based on a purer, higher surface area silica which is specially manufactured to provide maximum bonded phase coverage.  The result is a series of columns which provide excellent peak shapes using simple eluents while operating at low pressure. 

Open MSPowerPoint Presentation on Inertsil ODS-EP 

Figure 1 - Tanaka Test for Selectivity on Various Competitive Embedded Polar Compounds
Eluent: MeOH:Water 80:20 Flow: 1.0 ml/min Temp: 40°C Detection: UV @ 254nm  Sample: 1. caffeine, 2. phenol, 3. n-Butylbenzene, 4. n-amylbenzene, 5. o-terphenyl, 6. triphenylene
Notes:  The Tanaka test is one of several industry-wide standard tests which illustrate selectivity differences between bonded phases. The wide range of Inertsil Series-3 phases show vast selectivity differences in Tanaka test, allowing a wide array of compounds to be separated.
         (click on image to enlarge)

 Figure 2 - Tanaka Test for Selectivity on Various Inertsil Phases

Figure 3 - Compatible with 100% Aqueous eluents

 
     
     Click here for Inertsil ODS-EP ordering information 
     Click here to find a local authorized Inertsil Dealer 
 
Particle
Size(s)		Particle
Shape		Surface
Area 		Pore
Size 		Pore
Volume 		Silica
Purity 		Bonded
Phase 		End-
Capping		Carbon
Load		pH
Range*
5 µmSpherical450 m2/g100Å1.05 mL/g99.999%Octadecyl +
 polar Groups		Yes 2 - 7.5
* Inertsil phases are known to provide excellent results and long column life at pH levels of 9-10. However, optimum column life may be achieved  at a pH between 2 and 7.5.

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*Product pricing shown in U.S. dollars applies to purchases made in the United States, only.