ACE Excel columns are designed to take full advantage of low dispersion, ultra-high pressure UPLC and UHPLC instruments.  The introduction of ACE Excel UHPLC columns gives chromatographers more choices to achieve better results with their UPLC and UHPLC instruments.

ACE Excel C18
Optimized for maximum efficiency, superior peak shape and resolution. Utilizes the same ultra high purity silica as all ACE phases.
ACE Excel C18-AR >
ACE C18-AR leverages the selectivity of both C18 and Phenyl in a single phase to separate mixtures not possible with either a C18 or Phenyl phase alone.  Complementary selectivity to ACE C18 and ACE C18-PFP.  Compatible with highly aqueous mobile phases.
ACE Excel C18-PFP >
ACE C18-PFP offers multiple types of analyte-stationary phase interactions (hydrophobic, π–π, dipole-dipole, and hydrogen bonding) to deliver optimal selectivity for a variety of mixtures. Complementary selectivity to ACE C18 and ACE C18-AR.  Compatible with highly aqueous mobile phases.
ACE Excel C18-Amide* >
Introducing the new ACE® C18-Amide, a uniquely-designed polar-embedded phase, which offers enhanced retention and resolution of polar acidic, phenolic, and hydroxy-substituted analytes.  Provides alternative selectivity to all other ACE phases.  Useable with 100% aqueous eluents.
ACE Excel AQ (C18)
A unique C18 bonded phase with integral polar functionality. Resistant to retention loss (due to pore dewetting, formerly called “phase collapse”) even with 100% aqueous mobile phases.
ACE Excel C8
Increased bonding density compared to ACE C18. Similarly optimized for maximum efficiency, superior peak shape and resolution.
ACE Excel Phenyl
Hydrophobicity between C4 and C8 phases, with increased polar selectivity. Improved performance, stability and reproducibility compared to conventional phenyl phases. Compatible with highly aqueous mobile phases.
ACE Excel CN-ES* >
The new ACE® CN-ES is a unique phase that has an extended alkyl chain with a terminal cyano group.  Provides C18-like retention and stability compared to commercial cyanopropyl phases.  Offers dipole-dipole interactions, hydrophobic interactions and alternative selectivity to other polar phases such as ACE C18-Amide, C18-PFP, and C18-AR.  Useable with 100% aqueous mobile phases in RPLC mode, and also has excellent performance in normal-phase mode (NPLC).
ACE Excel C4
Combines lower hydrophobicity with excellent chromatographic performance. Improved hydrolytic stability compared to conventional C4 phases.
ACE Excel CN
Suitable for use in both normal and reversed-phase modes. Provides strong dipole-dipole interaction with analytes and weak hydrophobic interaction. Greatly improved performance, stability and reproducibility compared to conventional CN phases.
ACE Excel SuperC18* >
ACE® SuperC18™, a uniquely-bonded EBT™ (Enhanced Bonding Technology) end-capped C18 phase, which provides unprecedented inertness and unparalleled efficiency over an extended pH range (pH 1.5–11.5) and uncompromising durability.  Excellent for improving retention, loading and peak shape for basic analytes, and for adjusting selectivity during method development using higher pHs.
ACE Excel NH2
• Proprietary bonding technology provides high robustness with excellent column lifetimes
• Usable in RP, NP, weak anion-exchange and HILIC modes
• Ultra-inert, high efficiency 1.7μm, 3μm and 5μm particles for optimum peak shape
• Highly reproducible stationary phase batch-to-batch and column-to-column
• Ideal for the analysis of sugars
*The ACE SuperC18, C18-Amide, and CN-ES phases are available only in ACE Excel (1000-bar hardware) format for analytical separations (2.1, 3.0 and 4.6 mm IDs). These phases are also available in compression hardware (400 bar maximum) for semi-prep and preparative columns, and for microbore (1 mm ID), capillary (0.3 and 0.5 mm ID) and nano columns (75 and 100 µm ID).
Care and Use Sheets Available on Request (email hplc@mac-mod.com)