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Rugged, pH stable HPLC Columns

Gemini HPLC Information


U.S. Patent No. 7, 563, 367

Setting the Standard for pH Method Development

Rugged reversed phase HPLC columns that offer extended lifetime under extreme pH conditions and excellent stability for reproducible, high efficiency separations.

  • Take full advantage of high and low pH conditions (pH 1-12) to manipulate selectivity
  • Expect longer column lifetime with patented TWIN-NX technology
  • Ideal for analytical and preparative separations of basic and acidic compounds

Inside Twin Technology

During the final stage of silica manufacturing a unique silica-organic layer is grafted to create a completely new composite particle. This composite particle particle retains its mechanical strength and rigidity along with excellent efficiency, while the silica-organic shell protects the particle from chemical attack.

Inside Twin-NX Technology

TWIN-NX technology uses an improved patented organo-silica grafting process which incorporates highly stabilizing ethane crosslinking.

Gemini C18 and C6-Phenyl
TWIN Technology

Gemini NX-C18
TWIN-NX Technology

C18


Particle Sizes (µm)3, 5, 10
Pore Size (Å)110
Surface Area (sq. m/g)375
Carbon Load (%)14
Compare All Phases

C18 Phase Information


Unique selectivity, high structural integrity and increased loadability make it ideal for preparative and purification applications in pre-packed columns and bulk media.

PhaseParticle Sizes (µm)Pore Size (Å)Surface Area (sq. m/g)Carbon Load (%)Recommended Use
C183, 5, 1011037514Separation of basic compounds under high pH conditions
C6-Phenyl3, 511037512Separation of aromatic, polar, or basic compounds under high pH conditions
C8(3)10100N/A
NX-C183, 5, 1011037514High efficiency analytical or preparative separations under extreme pH conditions
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