Welch Materials Ultisil MM (Mixed-Mode) columns feature a dual-mechanism stationary phase combining hydrophobic (C18) and ion-exchange (e.g., Strong Cation Exchange, SCX) interactions. They allow for the separation of highly polar, basic, and acidic compounds in a single run without requiring volatile ion-pairing reagents.
Ultisil MM C18/SCX: Features a mixed-mode stationary phase bonding C18 (hydrophobic) and Strong Cation Exchange (SCX) functional groups. Ideal for analysing basic and neutral compounds, metabolites, and separating highly polar basic molecules while allowing direct mass spectrometry (MS) compatibility.
Ultisil MM NH2/CN: Combines amino (NH₂) and cyano (CN) bonding to offer unique selectivity compared to conventional amino columns. It is highly suited for separating structurally similar carbohydrates like lactose and galactose.
Ultisil Series HPLC Columns are based on ultra-pure (purity > 99.999%) spherical and totally porous silica, unique bonding chemistry and proprietary surface modification techniques, producing excellent peak shape, column efficiency and exceptional lot-to-lot reproducibility. Ultisil column is the best choice for method development. owing to complete bonding chemistries and stable performance.
Features
- Ultra-pure spherical porous silica, purity > 99.999%
- Wide pH range: 2.0-8.0
- High efficiency: theoretical plate > 80000/m
- Excellent peak symmetry: tailing factor=0.95~1.05
- Exceptional lot-to-lot reproducibility
