Skip to content
uhplcs logo 2023

Column Coupler

HPLC Column Coupler OEM Supplier

uHPLCs” stands out as a professional factory dedicated to producing high-quality HPLC Sample Loops. With an emphasis on precision and reliability, uHPLCs combines cutting-edge manufacturing techniques with stringent quality control measures to ensure that each sample loop meets the rigorous demands of modern laboratories.

  • Leading Technology: uHPLCs employs state-of-the-art manufacturing technologies to produce high-precision HPLC Sample Loops, ensuring top performance in chromatographic analysis.

  • Quality Assurance: Each sample loop undergoes rigorous quality control checks to meet the high standards required in modern laboratories, guaranteeing reliability and consistency.

  • Versatility: Designed to be compatible with a broad range of HPLC systems, our sample loops support a variety of analytical applications, from pharmaceuticals to environmental testing.

  • Custom Solutions: We offer customizable sample loops tailored to specific analytical needs, helping researchers achieve precise and repeatable sample injections.

  • Industry Expertise: With years of industry experience, uHPLCs is committed to enhancing chromatographic techniques and supporting scientific advancements across multiple sectors.

Stainless Steel HPLC Sample Loop High Pressure

Contact Us For Excellent Service

Proin ullamcorper pretium orci. Donec nec scelerisque leo. Nam massa dolor imperdiet nec consequata congue idsem. Maecenas malesuada faucibus finibus.

Main Features :

  • 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.

1. Hassle-Free
Before & After Servic

2. Quality Management Test Before Mass Manufacture

3. Rigorous Production Process

How to Choose Right HPLC Sample Loop

1. Determine the Required Volume:

  • Sample Size: Choose a loop volume that closely matches the volume of your sample injection. Common loop sizes range from 1 µL to 5 mL. A loop that’s too large can result in unnecessary dilution or waste of the sample, while a loop that’s too small may not hold enough sample for effective analysis.
  • Analytical Scale: Consider whether you are working in microscale, analytical scale, or preparative scale chromatography, as this will influence the required loop volume.

2. Consider the Material:

  • Chemical Compatibility: The loop material should be resistant to the solvents and samples used in your analyses. Common materials include stainless steel for its durability and resistance to high-pressure conditions, and PEEK or Teflon for their inertness and compatibility with a wider range of chemicals.
  • Pressure Resistance: Ensure the material can withstand the pressures applied during HPLC operations.

3. Assess System Compatibility:

  • Injector Type: Make sure the sample loop is compatible with the injector system of your HPLC. Compatibility is crucial to avoid leaks and ensure accurate sample delivery.
  • Connection Type: Check the connection types (such as fittings and ferrules) that your HPLC system uses and ensure the sample loop can be securely attached without risk of leaks.

4. Evaluate Loop Configuration:

  • Loop Geometry: The shape and diameter of the loop can affect the flow dynamics and efficiency of sample transfer. Select a loop geometry that fits well with your system’s design and minimizes dead volume.
  • Internal Volume: Be mindful of the loop’s internal volume beyond just its capacity, as excessive internal volume can lead to sample dispersion or dilution.

5. Review Ease of Installation and Maintenance:

  • User-Friendly Design: Consider loops that are easy to install and replace, reducing downtime and facilitating routine maintenance.
  • Durability: Opt for loops that are durable and provide consistent performance over time, minimizing the need for frequent replacements.
Country Export
Production Area
Production Time

What Clients Say

Contact Us

If you require high-quality HPLC fittings and connectors, our dedicated sales team is here to help. Our representatives have extensive experience in the field of laboratory equipment and can provide you with personalized recommendations based on your specific needs. Whether you’re looking to upgrade your current setup or start a new project, our team has the knowledge and expertise to guide you toward the best products available.

We offer a comprehensive range of HPLC fittings and connectors, including column adapters, union tees, and bulkhead fittings, all manufactured to the highest quality and performance standards. Our sales team is available to assist you with selecting the right components for your system, ensuring that you receive the best possible results from your experiments.

Don’t hesitate to contact us for further information and pricing. Our goal is to provide excellent customer service and ensure you are completely satisfied with your purchase. Let us help you take the next step in advancing your laboratory’s capabilities with our high-quality HPLC fittings and connectors.


Need Help ?

Contact uHPLCs Today for Any Questions for HPLC / UHPLC 

+(86) 0755-28502380


Contact Us

Recent Posts

Why Use HPLC Sample Loop

Using an HPLC (High-Performance Liquid Chromatography) sample loop is essential for several reasons in chromatographic analysis. Here are the key benefits of using an HPLC sample loop:

1. Precision in Sample Volume Delivery:

  • Accuracy: Sample loops are crucial for delivering precise volumes of liquid samples into the chromatographic system. This accuracy is vital for consistent, reproducible results in HPLC analysis.
  • Repeatability: Using a sample loop ensures that each injection is uniform, which is important for comparative studies and quality control processes.

2. Minimal Sample Loss:

  • Efficient Use of Samples: Sample loops help minimize the loss of sample by ensuring that nearly all the introduced sample is utilized in the analysis. This is particularly important when dealing with rare or expensive samples.
  • Reduced Cross-contamination: The design of sample loops helps prevent cross-contamination between samples, which is critical in high-throughput environments where many samples are analyzed sequentially.

3. Enhanced Analytical Performance:

  • Consistent Sample Introduction: Consistent and repeatable sample introduction leads to better chromatographic resolution and more reliable data.
  • Reduced Carryover: Proper use of sample loops helps in reducing carryover effects from previous samples, thus maintaining the integrity of the chromatographic results.

4. Versatility and Flexibility:

  • Variety of Sample Sizes: Sample loops are available in various volumes, allowing flexibility in how much sample is injected based on the needs of the specific analysis.
  • Compatibility with Various Solvents: High-quality sample loops are designed to be chemically inert, making them compatible with a wide range of solvents and samples used in different HPLC applications.

5. Cost-Effective:

  • Reduction in Solvent and Sample Waste: By ensuring precise volume delivery, sample loops help reduce the amount of solvent and sample needed, which can lead to significant cost savings, especially in labs running large numbers of samples.
  • Longevity and Durability: High-quality sample loops are durable and can withstand the high pressures and harsh chemicals often used in HPLC systems, which reduces the need for frequent replacements.

6. Easy to Install and Maintain:

  • User-Friendly: Sample loops are generally easy to install and replace, which minimizes downtime and maintenance efforts in busy laboratory settings.

HPLC Sample Loop Applications

HPLC (High-Performance Liquid Chromatography) sample loops play a vital role in a variety of analytical scenarios, due to their precision and versatility in handling different sample volumes. Here are some key applications of HPLC sample loops:

1. Pharmaceutical Analysis:

  • Quality Control: Sample loops are used extensively in the pharmaceutical industry for quality control testing to ensure drug products meet purity, potency, and safety standards.
  • Drug Development: During drug development, sample loops facilitate the analysis of new compounds in various stages of formulation, helping researchers determine the stability and composition of new drugs.

2. Environmental Testing:

  • Pollutant Detection: In environmental labs, sample loops help in the detection and quantification of pollutants such as pesticides, heavy metals, and organic contaminants in water, soil, and air samples.
  • Regulatory Compliance: Ensuring compliance with environmental regulations often requires precise and reproducible sample analysis, which is facilitated by HPLC sample loops.

3. Food and Beverage Industry:

  • Contaminant Screening: HPLC sample loops are used to test for contaminants and adulterants in food and beverages, ensuring consumer safety and product integrity.
  • Flavor and Quality Analysis: They also assist in the analysis of flavor components and additives to maintain product consistency and quality.

4. Clinical Research:

  • Biomarker Discovery: In clinical settings, sample loops are used for the analysis of biological samples to discover and validate biomarkers for diseases.
  • Therapeutic Monitoring: Monitoring therapeutic drug levels in patients’ blood or urine samples is another critical application, aiding in personalized medicine.

5. Chemical Industry:

  • Component Analysis: Sample loops facilitate the separation and analysis of chemical mixtures, helping in quality control and research of chemical products.
  • Process Monitoring: They are used in process analytical technology to monitor chemical production processes in real-time, ensuring process efficiency and safety.

6. Forensic Science:

  • Drug Testing: In forensic toxicology, sample loops are utilized for precise drug quantification in biological samples, important in legal and criminal investigations.
  • Trace Evidence Analysis: They help in the analysis of trace chemicals from various samples, which can be pivotal in solving crimes.

7. Biotechnology:

  • Protein and Peptide Analysis: HPLC sample loops are crucial in the analysis of proteins and peptides, including in studies of protein synthesis and modification.
  • Nucleotide Sequencing: They are also used in the separation and analysis of nucleotides and other biomolecules critical for genetic research.

8. Cosmetics Industry:

  • Product Stability Testing: Sample loops help analyze the stability of cosmetic products under various conditions.
  • Ingredient Verification: Ensuring that cosmetic products contain the correct amounts and types of active ingredients is facilitated by HPLC sample loops.

Frequently Asked Questions

An HPLC Sample Loop is a critical component of an HPLC (High-Performance Liquid Chromatography) system, used specifically in the sample injection process. It is essentially a precisely calibrated loop of tubing that holds a specific volume of the sample liquid. 

The main function of the sample loop is to introduce a consistent and precise volume of the sample into the chromatographic flow stream. 

This is crucial for achieving reproducible and reliable results in HPLC analysis. The sample loop is part of the injector, which can be a manual or an automatic device, and plays a key role in controlling the accuracy of the sample volume introduced into the column for separation.

Selecting the appropriate size of an HPLC sample loop is essential for optimizing your chromatographic analysis. The loop size should ideally match the volume of your sample injection to minimize waste and ensure precision. Typically, sample loops range from a few microliters up to several milliliters. The choice of size depends on:

  • Injection Volume Needs: Determine the typical volume of sample you need to inject. If your analyses often require small volumes, choose smaller loops to avoid sample dilution and waste.
  • Sensitivity and Detection Limits: Consider the sensitivity of your detection method and the concentration of your analyte. Smaller loops might be better for highly concentrated samples or when using sensitive detection methods.
  • System Pressure and Compatibility: Ensure that the sample loop can withstand the operating pressures of your HPLC system and is compatible with the injector format.

HPLC Sample Loops are typically made from materials like stainless steel, PEEK (Polyether ether ketone), or Teflon. These materials are chosen based on their chemical stability and compatibility with various solvents used in HPLC:

  • Stainless Steel: Offers excellent mechanical strength and high pressure resistance, making it suitable for most applications, except those involving corrosive solvents.
  • PEEK: Provides exceptional chemical resistance against aggressive solvents and is preferred when working with bioanalytical samples due to its inert nature.
  • Teflon: Known for its extreme chemical inertness, Teflon is used for the most sensitive applications to avoid any risk of sample contamination or degradation.

Proper maintenance and cleaning of HPLC sample loops are imperative to ensure longevity and reliable performance:

  • Routine Flushing: Regularly flush the sample loop with a suitable solvent to prevent buildup of residues and ensure it is clean before each injection.
  • Use of Filtered Solvents: Always use filtered solvents to avoid particulate matter that can clog the loop.
  • Chemical Cleaning: Occasionally, a more thorough chemical cleaning might be needed, especially if the sample loop has been exposed to highly sticky or viscous samples. Suitable cleaning solvents would depend on the type of contamination.
  • Physical Inspection: Regularly inspect the loop for any signs of damage or wear, such as bends or kinks in the tubing, which can affect performance.

Yes, the use of an HPLC sample loop can significantly impact your chromatography results. The precision and accuracy of sample volume that sample loops provide are crucial for reproducibility in chromatographic separation. An incorrectly chosen sample loop can lead to variations in sample volume, resulting in peak area inconsistencies and affecting the quantitative analysis. Furthermore, if a sample loop is contaminated or damaged, it may introduce carryover or cause sample loss, thereby impacting the reliability of the results.

Hotsale HPLC Products

Pre 50mm Empty HPLC Columns hardware

50mm Empty HPLC Columns

Previous slide Next slide 50mm Empty HPLC Columns Wholesale and OEM Manufacturer Short Description: UHPLC Empty Column Hardware (Each column blank kit) includes a precision-bore

Read More »
20mm Empty HPLC Columns hardware

20mm Empty HPLC Columns

Previous slide Next slide 20mm Empty HPLC Columns 316L Stainless Steel Short Description: UHPLC Empty Column Hardware (Each column blank kit) includes a precision-bore polished

Read More »


Email: sales@uhplcs.com
Phone: +86 0755 28502380
51-3, Fu 'an West Road, Pinghu Street, Longgang District, Shenzhen City, 518111 China
We Will Send Back Your Inquiry Within 48-Hours

Can’t Get Enough?

Get More Information and Quotation
for Our HPLC Column Hardware Today !

Subscribe for exclusive offers and updates on new arrivals

Seraphinite AcceleratorOptimized by Seraphinite Accelerator
Turns on site high speed to be attractive for people and search engines.