Chromasir® Officially Launches Fidelis-Peak® Solvent Effect Eliminator for HPLC and UPLC

Following years of technical optimization and rigorous field-test validation, Maxi Scientific Instruments (Suzhou) Co., Ltd. is proud to officially launch the Chromasir® Fidelis-Peak® Solvent Effect Eliminator. Specially engineered to resolve the persistent solvent effect in liquid chromatography, this innovative device combines peak-shape optimization, column protection, an ultra-long service life, and effortless maintenance to elevate analytical accuracy in modern laboratories.

What Is the Solvent Effect in Liquid Chromatography?

The solvent effect occurs when the sample-dissolving solvent differs significantly from the initial mobile phase in elution strength, polarity, organic-phase ratio, pH value, or buffer-salt concentration, causing the injected sample zone to diffuse and distort at the column head, which leads to peak fronting, splitting, broadening, tailing, and quantification errors.

For analytical chemists running reverse-phase HPLC or UPLC methods—especially when samples are dissolved in pure organic solvents like 100% methanol or acetonitrile—overcoming solvent effects without re-developing sample preparation protocols has long been a major challenge.

How the Fidelis-Peak® Solvent Effect Eliminator Works

Unlike traditional approaches that require time-consuming sample dilution or solvent evaporation, the Fidelis-Peak® Solvent Effect Eliminator resolves solvent incompatibility physically before the sample ever reaches the stationary phase:

1. Microchannel & Cavity Architecture: A specialized microchannel and inner cavity structure is installed upstream of the chromatographic column. Once the system reaches equilibrium, the inner cavity is completely filled with the mobile phase.

2. Micro-Turbulence Homogeneous Mixing: Upon sample injection, the sample solution flows through the microchannels into the small inner cavity. The geometry generates micro-turbulence, driving rapid and homogeneous mixing between the sample solvent and the retained mobile phase.

3. Pre-Exchange of Liquid-Phase Environment: By pre-exchanging the liquid-phase environment of the sample prior to column entry, the device brings the analyte to a stable pre-separation state in advance.

Key Advantages for Analytical Laboratories

• • Eliminates Peak Fronting & Doubles Column Efficiency: Effectively eliminates peak fronting caused by solvent effects, significantly improves peak symmetry, and doubles chromatographic column efficiency.
• • Zero Gradient Delay & Method-Friendly: Slightly improves tailing peaks while having no negative impact on symmetric peaks, introducing no gradient time delay, and requiring zero modifications to existing analytical procedures.
• • Superior Baseline & Retention Time Stability: Dramatically improves baseline stability—especially under gradient elution conditions—and stabilizes analyte retention times, making it ideal for mobile phases containing ion-pair reagents.
• • Enhanced Impurity Resolution: Simultaneously optimizes the peak shapes of both main peaks and impurity peaks, clearly resolving minor impurity peaks that were previously indistinct.
• • Packing-Free, Ultra-Long Service Life: Adopts a packing-free design constructed from corrosion-resistant PEEK and 316L stainless steel, ensuring exceptional chemical durability and no restrictions on chromatographic column selection.
• • Built-In Column Protection: Equipped with an internal filter that replaces conventional inline filters, trapping solid particulate matter to protect downstream chromatographic columns and guard columns.

Product Specifications & Ordering Information

Designed in a compact guard-column style with high-pressure finger-tight fittings (rated up to 1000 bar), the Fidelis-Peak® series seamlessly integrates with all brands of HPLC and UPLC columns.

Frequently Asked Questions (FAQ)

Does the Fidelis-Peak® Solvent Effect Eliminator cause gradient time delay?

No. The Fidelis-Peak® Solvent Effect Eliminator uses a precision microchannel cavity (9μL for UPLC and 25μL for HPLC) that causes no gradient time delay, has no adverse effect on symmetric peaks, and does not interfere with established experimental procedures.

Can it replace an inline filter in an HPLC or UPLC system?

Yes. Every Fidelis-Peak® Solvent Effect Eliminator is equipped with an internal filter that traps solid particles from the flow path, allowing it to directly replace standard inline filters and protect the chromatographic column.

Is special maintenance required during daily operation?

No special maintenance is required. Thanks to its packing-free, corrosion-resistant 316L stainless steel and PEEK construction, conventional chromatographic conditions do not affect its service life, and it can be stored directly together with the chromatographic column.

Upgrade Your Chromatographic Performance Today

Maxi Scientific Instruments (Suzhou) Co., Ltd. continues to deliver high-reliability, cost-effective chromatography consumables under the Chromasir® brand. Contact our team at sale@chromasir.com or call +86 400-6767580 to request a quote or sample evaluation for the new Fidelis-Peak® Solvent Effect Eliminator.