Volume Precision: HPLC sample loops are designed to hold precise volumes of sample, typically ranging from a few microliters up to several milliliters. This precision ensures accurate and reproducible injections into the chromatographic system.

Material Quality: Sample loops are often made from high-quality materials such as stainless steel, PEEK (Polyether ether ketone), or Teflon. These materials are chosen for their chemical resistance and durability, which are critical for handling a wide range of solvents and samples without contamination.

Compatibility: These loops are engineered to be compatible with various types of HPLC systems and injectors. This universal design aids in seamless integration with existing equipment.

Minimal Sample Loss: The design of the sample loop minimizes dead volume and sample loss, which is crucial for maintaining sample integrity, especially when dealing with limited or valuable samples.

Resistance to High Pressure: Given that HPLC operates under high pressures, sample loops are built to withstand these conditions without compromising their structural integrity or performance.

Easy to Install and Replace: HPLC sample loops are designed for easy installation and quick replacement, facilitating routine maintenance and minimizing downtime in the laboratory.

Variety of Configurations: They are available in various configurations, including different diameters and loop sizes, to accommodate specific analytical needs and sample volumes.

Boost your UHPLC performance with the 2.1mm Direct-Connect Guard Column – superior protection, refined separation.

The uHPLCs UPLC Direct Connection Guard Column is engineered for ultra-high-performance protection of your analytical columns. 

Designed with a direct-connection structure, it minimizes dead volume, eliminates the need for additional fittings, and streamlines system setup — all while extending the lifespan of your main column. Ideal for precision chromatographic analysis in pharmaceuticals, food safety, environmental testing, and biotechnology, the 2.1 mm guard column ensures excellent retention, separation, and reproducibility under high pressure conditions up to 13,000 psi (900 bar).

Boost your UHPLC performance with the 2.1mm Direct-Connect Guard Column – superior protection, refined separation.

The uHPLCs UPLC Direct Connection Guard Column is engineered for ultra-high-performance protection of your analytical columns. 

Designed with a direct-connection structure, it minimizes dead volume, eliminates the need for additional fittings, and streamlines system setup — all while extending the lifespan of your main column. Ideal for precision chromatographic analysis in pharmaceuticals, food safety, environmental testing, and biotechnology, the 2.1 mm guard column ensures excellent retention, separation, and reproducibility under high pressure conditions up to 13,000 psi (900 bar).

USHD Bio-SEC Column is specifically engineered for the precise molecular weight analysis of macromolecular biological samples, including proteins, nucleic acids, enzymes, antibodies, peptides, and ADC drugs.

Utilizing a specialized bonding process, it minimizes sample adsorption, ensures stable batch-to-batch reproducibility, and extends column lifespan—ideal for applications such as monoclonal antibody (mAb) drug development.

USHD Hilic-ZIL Column is a hydrophilic interaction ion exchange column designed with bonded zwitterionic functionalities, enabling efficient separation of acidic, basic, and zwitterionic compounds.

Extremely hydrophilic in nature, it supports 100% aqueous mobile phases and is ideal for retaining highly polar ionotropic compounds and basic drug molecules that are poorly retained in traditional reversed-phase chromatography.

 Designed for high aqueous mobile phases, it offers excellent selectivity, strong retention performance, and long column life—making it ideal for challenging polar analyses, including highly basic polar compounds.

USHD Hilic-Amide Column is a chimeric HILIC hydrophilic interaction column based on amide bonding, offering similar retention behavior to HILIC amino columns but with enhanced selectivity and significantly longer column lifespan.

It provides strong retention for polar ionic compounds and excels in the separation of acidic and strongly polar analytes, especially under low-pH buffer conditions.

With moderate polarity,and unique π-electron interactions, it delivers distinct selectivity, making it ideal for separating strongly basic and highly hydrophobic compounds where traditional C18 or C8 columns fall short

The USHD SiO₂ HPLC Analytical Column is made from ultrapure spherical silica gel with metal impurities less than 10 ppm, delivering high column efficiency and excellent peak shape.

It offers specialized selectivity for structural isomers and is ideal for separating strongly polar, basic organic, and fat-soluble compounds such as vitamins, steroids, and other drug molecules.

It is ideal for separating aromatic and halogenated compounds, protonated amines, quaternary ammonium compounds, and various isomers, making it a reliable choice for biopharmaceutical, environmental, and natural product analysis.

USHD Phenyl HPLC Analytical Column is designed with an ultrapure silica matrix bonded with a phenylpropyl stationary phase, offering enhanced selectivity for aromatic and polar compounds. Featuring a double end-capping technique,

it delivers better peak symmetry and reliable performance across a broad range of applications.

Our USHD C8 HPLC Column features a unique bonding process for exceptional batch-to-batch reproducibility.

With high carbon content and double end-capping technology, it offers superior stability, enhanced selectivity, and improved retention capacity, making it ideal for a wide range of analytical applications.

OurC18 HPLC Column is based on ultra-high purity organic-inorganic hybrid silica, designed with a proprietary bonding process for enhanced performance.

It offers superior chemical resistance, extended durability, and improved peak shape, making it ideal for demanding analytical applications

Its uncapped design is optimized for compatibility with 100% pure water (~0% water phase) and provides robust performance even under low pH conditions.

USHD C18-AQ HPLC Column—engineered for superior HIC chromatography. With its innovative double end-capping technique and moderate carbon content, this column delivers enhanced retention and selectivity for hydrophilic and polar compounds. 

Designed to work seamlessly with 100% pure water (and near 0% water phase), it overcomes the limitations of standard C18 columns, making it ideal for analyzing organic acids, chemical drugs, metabolites, and food components.

this column offers excellent batch reproducibility, high carbon content for superior efficiency and selectivity, and strong retention capability. 

With outstanding mechanical strength, uniform pore and particle size distribution, 

it ensures stable separation of polar, acidic, basic, and hydrophobic compounds.

 Widely applied in pharmaceuticals, food safety, environmental analysis, and biological research.

Unlock unparalleled robustness with the USHD C18-Pro HPLC column, where superior chemical resistance ensures consistent, high-quality performance.