Size Exclusion Chromatography Peptide Purification Service

MtoZ Biolabs provides size exclusion chromatography peptide purification service based on high-resolution molecular sieve chromatography technology, offering high-purity peptide separation and purification solutions for research and pharmaceutical clients. This service achieves efficient peptide fractionation through molecular size differences, ensuring that target peptides maintain biological activity and structural integrity while achieving high purity. It is suitable for applications in drug development, structural research, and functional analysis.

 

Principle of Size Exclusion Chromatography  

Size exclusion chromatography (SEC), also known as molecular sieve chromatography, is a classical method that separates molecules based on differences in diffusion and exclusion within a porous medium.  

Separation principle: When molecules pass through the pores of the packing material, larger molecules are excluded while smaller ones enter the pores, resulting in different elution volumes.  

Features: Separation depends solely on molecular size and shape rather than chemical interactions.  

Advantages: Mild, non-chemical, and non-destructive to sample structures, making it ideal for heat-sensitive or complex biomolecules such as peptides and proteins.

 



Figure1. The Principle of Size Exclusion Chromatography

Size Exclusion Chromatography Peptide Purification Service at MtoZ Biolabs  

MtoZ Biolabs utilizes a high-precision SEC platform to provide peptide purification services that ensure both purity and recovery.  

🔹 Service scope: Covers synthetic peptides, recombinant peptides, and naturally derived peptides for separation and purification.  

🔹 Core technology: Employs optimized column materials (such as Superdex, Sephadex, and TSKgel) and high-sensitivity detection systems for accurate molecular weight separation.  

🔹 Quality control: Combines LC-MS and HPLC analyses to verify the structure and purity of purified products.  

Our service is particularly suitable for research and pharmaceutical projects that require high standards of peptide purity, homogeneity, and biological activity.

 

Workflow of Size Exclusion Chromatography Peptide Purification Service  

1. Sample evaluation: Assess solubility, aggregation state, and initial purity to develop an appropriate chromatography strategy.  

2. Chromatographic separation: Separate molecules by size using high-resolution SEC systems.  

3. Fraction collection: Automated fraction collectors divide peaks based on elution profiles.  

4. Analysis and validation: Confirm peptide purity and molecular weight using LC-MS or HPLC.  

5. Data processing and reporting: Provide standardized analytical data and reports.

 

Why Choose MtoZ Biolabs  

☑️ High-performance instrument platform: Equipped with multiple high-resolution SEC systems and high-sensitivity detectors.  

☑️ Professional technical team: Experienced in peptide purification and analysis across diverse sample types.  

☑️ Integrated solutions: Offer complete workflows from sample pretreatment to post-purification quality control.  

☑️ Reliable quality: Each batch includes detailed chromatograms and analytical reports ensuring traceability.  

☑️ Flexible customization: Optimize purification schemes according to peptide properties such as length, hydrophobicity, and molecular weight.

 

Applications of Size Exclusion Chromatography Peptide Purification Service  

1️⃣ Drug development: Removal of impurities and preparative purification of peptide-based therapeutics.  

2️⃣ Structural biology: Isolation of individual peptide components for NMR, X-ray, or MS analysis.  

3️⃣ Functional studies: Separation of bioactive peptides for cellular or in vitro assays.  

4️⃣ Protein engineering: Removal of small-molecule contaminants or aggregates to improve recombinant protein purity.  

5️⃣ Quality control: Verification of batch consistency in biologics and peptide therapeutics.

 

Sample Submission Guidelines  

Sample Type	Synthetic peptides	Recombinant or extracted peptides	Natural extracts
Recommended Amount	≥2 mg	≥1 mg total peptide	≥5 mg or equivalent liquid volume

 

Deliverables  

1. Original chromatograms and fractionation data  

2. LC-MS or HPLC purity analysis report (PDF format)  

3. Quantitative data and peak area summary tables (Excel format)  

4. High-resolution spectra and chromatographic images (TIFF or PNG format)  

5. Comprehensive summary and technical report

 

FAQs  

Q1: What is the service's general workflow?  



 

Q2: What data formats are provided?  

MtoZ Biolabs provides results in multiple standard formats to ensure compatibility with various analysis and visualization platforms. Deliverables typically include:  

• Raw chromatographic data and elution profiles  

• Processed purity and quantification tables (Excel or CSV format)  

• High-resolution figures and chromatograms (TIFF or PNG)  

• Comprehensive summary report (PDF format) including experimental setup, methods, and QC information  

Additional data formats can be provided upon request to meet publication or project-specific needs.

 

Q3: How should I prepare my samples?  

To ensure accurate and reproducible results for peptide purification, MtoZ Biolabs recommends the following sample preparation guidelines:  

1. Sample Type: We accept synthetic peptides, recombinant peptides, natural extracts, or peptide mixtures.  

2. Sample Purity: Samples should be free of high salt concentrations, detergents, and insoluble particles that could affect chromatographic separation.  

3. Sample Amount: Please provide at least 1–2 mg of peptide or 500 μL of liquid sample for optimal purification efficiency.  

4. Storage and Shipping: Store peptides at −20°C or −80°C as appropriate. Ship samples on dry ice in sealed, leak-proof containers to preserve integrity.  

5. Documentation: Include detailed sample information such as peptide sequence (if available), buffer composition, and desired purification target.  

For more information, please refer to Sample Submission Guidelines for Proteomics and Sample Submission Guidelines for Metabolomics

 

If you are unsure about your sample preparation, our technical team can provide personalized pre-analysis consultation and a sample submission guide to help you optimize preparation and shipping conditions.

 

Start Your Project with MtoZ Biolabs  

Size exclusion chromatography peptide purification service provides a mild and efficient approach for peptide separation. Whether you are conducting drug development, structural analysis, or functional research, MtoZ Biolabs offers a professional analytical platform and rigorous quality standards to support your project. Contact us to learn more about customized solutions or request a quote. Our team is committed to providing reliable and high-quality technical services for your research.