Advancing Oligonucleotide Analysis with GTxResolve Microflow Columns with MaxPeak Premier Technology

As modern biopharma pipelines evolve toward increasingly complex modalities, such as therapeutic oligonucleotides, analytical scientists face a familiar pressure: obtain higher sensitivity from smaller samples, while reducing solvent consumption and workflow burden. Microflow liquid chromatography (LC) has emerged as a powerful strategy to meet these demands, and recent column technology innovations are pushing performance even further.

Waters next generation GTxResolve MaxPeak Premier Microflow Columns represent one such leap forward. Engineered to enhance recovery for challenging biomolecules, including oligonucleotides, they offer a high-sensitivity path to deeper insights even when the sample size is limited.

Why microflow for oligonucleotide analysis?

Oligonucleotide characterization presents unique chromatographic challenges, including:

• Adsorptive losses to metal hardware
• Poor peak shapes for acidic or highly charged analytes
• Sensitivity constraints when working with scarce therapeutic samples

Shrinking column diameter from 2.1 mm to a 1 mm ID microflow format directly addresses these issues by reducing band broadening and concentrating analytes for improved detectability. Waters newest microflow columns deliver up to 2x higher sensitivity than conventional stainless-steel microflow columns, an advantage especially meaningful for low-abundance oligonucleotides, often associated with bioanalysis/DMPK studies.

MaxPeak HPS Technology: Protecting every molecule

As has been clearly shown with traditional 2.1 mm ID analytical columns, MaxPeak High Performance Surfaces (HPS) Technology essentially eliminates the variability associated with non-specific adsorption (NSA) of acidic analytes (including oligonucleotides) to the metal surfaces of a column, thus improving recovery/sensitivity and repeatability.

For oligonucleotides that are often highly negatively charged, this translates into:

• Reduced analyte loss due to minimized metal interactions
• Sharper, taller peaks
• Improved reproducibility and lower limits of detection

These improvements allow analysts to move confidently from method development to validated performance without the lengthy passivation/sample conditioning associated with conventional stainless-steel hardware.

Efficiency with purpose: Lower sample and solvent use

In addition to sensitivity enhancements, microflow formats help laboratories meet sustainability and cost-reduction goals. Transitioning from a 2.1 mm to a 1 mm ID column reduces:

• Solvent use by 4X, lowering waste and operating expenses
• Sample consumption by up to 75%, allowing more data to be captured from precious, limited samples

With reproducibility from the first injection and reduced peak tailing at low flow rates, these columns integrate seamlessly into LC-MS oligo workflows without requiring major system reconfiguration. 

A more sustainable future for oligonucleotide characterization

Beyond performance, MaxPeak Premier Microflow Columns are manufactured with sustainability in mind. They incorporate up to 70% recycled content and come from resource-efficient facilities certified for environmentally responsible design. In addition to the solvent reductions inherent to microflow separations, MaxPeak Premier Microflow Columns received the ACT Label certification for their environmentally responsible design and manufacturing.

Microflow is no longer a compromise, it’s a competitive advantage

As oligonucleotide therapeutics continue their rapid expansion, analytical teams need tools that can keep pace with increasing complexity and decreasing sample volumes. MaxPeak Premier Microflow Columns bring together heightened sensitivity, improved analyte recovery, and meaningful resource savings, delivering the workflow acceleration and data confidence required in modern bioseparations.

Whether you are developing ASOs, siRNAs, CRISPR guides, or mRNA purification strategies, microflow are your high-performance, low-resource path forward.

Are you ready to explore what’s possible with GTxResolve Microflow Columns? Take a deeper dive with these resources:

• Register for our upcoming microflow webinar
• Visit our Microflow Columns product page