34μm High-Resolution Ion Exchange Chromatography Media Q HP 6% Q TopIEX HP

34 μm Q HP High-Resolution Anion Exchange Chromatography Media – Q TopIEX HP

SHBC Q TopIEX HP is a high-resolution strong anion exchange chromatography medium based on crosslinked 6% agarose beads with an average particle size of 34 μm.

The smaller particle size provides higher chromatographic resolution, making Q TopIEX HP especially suitable for intermediate purification and polishing of proteins and other biomolecules.

The matrix is functionalized with Q (quaternary ammonium) strong anion exchange groups for efficient charge-based separation.

Q TopIEX HP Technical Specifications

What Is Q HP Chromatography Media?

Q HP is a high-performance strong anion exchange chromatography medium designed for applications where resolution is more important than maximum process flow.

The positively charged Q ligand interacts with negatively charged proteins and other biomolecules under suitable buffer conditions.

The smaller 34 μm particle size creates a more efficient packed bed and supports higher-resolution separation of closely related biomolecules.

Cytiva uses the same general design principle in Q Sepharose High Performance: crosslinked agarose beads with a mean diameter of 34 μm and quaternary Q groups, specifically positioned for intermediate purification and polishing.

34 μm Beads for High-Resolution Separation

Particle size strongly influences chromatographic efficiency.

Compared with larger Fast Flow particles, the 34 μm format provides:

• Higher chromatographic resolution

• Improved separation efficiency

• Better peak definition

• Greater ability to resolve closely related components

• Suitable performance for intermediate purification

• Suitable performance for polishing chromatography

This makes Q TopIEX HP particularly useful when purity and separation resolution are prioritized over maximum flow rate.

6% Crosslinked Agarose Matrix

Q TopIEX HP uses crosslinked 6% agarose as the chromatography matrix.

Key characteristics include:

• Hydrophilic agarose matrix

• Crosslinked bead structure

• 34 μm average particle size

• Porous structure for biomolecule access

• Suitable packed-bed stability

• Low nonspecific hydrophobic interaction

• Suitable for high-resolution ion exchange chromatography

Cytiva's Q Sepharose High Performance likewise uses 6% crosslinked agarose with a 34 μm mean particle diameter and emphasizes high-resolution downstream purification.

Q Strong Anion Exchange Principle

Q TopIEX HP contains positively charged quaternary ammonium groups.

Under suitable conditions, negatively charged proteins and other biomolecules bind to the Q ligand.

Typical process:

Equilibration → Sample Loading → Binding → Washing → Selective Elution → Regeneration

Binding and separation depend on:

• Protein isoelectric point (pI)

• Buffer pH

• Conductivity

• Ionic strength

• Salt concentration

• Sample composition

• Loading amount

Anion exchange chromatography separates biomolecules according to differences in their net surface charge.

Key Advantages of Q TopIEX HP

• 34 μm average particle size

• High-resolution chromatography

• Crosslinked 6% agarose matrix

• Strong Q anion exchange chemistry

• Quaternary ammonium functional groups

• Suitable for protein purification

• Suitable for intermediate purification

• Suitable for polishing chromatography

• Suitable for complex biomolecule mixtures

• Suitable for process development

• Laboratory and bulk supply available

Protein Purification Applications

Q TopIEX HP can be evaluated for separation and purification of:

• Recombinant proteins

• Enzymes

• Peptides

• Acidic proteins

• Protein complexes

• Antibody-related process streams

• Other negatively charged biomolecules

Strong Q anion exchange media are widely used for purification of acidic and neutral proteins under suitable operating conditions. Bio-Rad likewise positions its High Q strong anion exchanger for high-resolution purification of proteins and peptides.

Intermediate Purification

Q TopIEX HP is especially suited to intermediate purification after an initial capture step.

Potential goals include:

• Increasing product purity

• Removing host-cell proteins

• Reducing nucleic acid impurities

• Separating charged contaminants

• Removing process-related impurities

• Preparing the product for final polishing

The 34 μm particle size provides higher resolution than larger Fast Flow media, making it suitable when separation selectivity becomes more important after initial capture.

Polishing Chromatography

Polishing is one of the key applications of Q TopIEX HP.

Potential polishing applications include:

• Removal of trace impurities

• Host-cell protein reduction

• DNA reduction

• Aggregate-related impurity separation

• Product variant separation

• Final purity improvement

High-resolution anion exchange chromatography is widely used in downstream polishing because charge differences can help resolve target products from closely related impurities.

Monoclonal Antibody Process Development

Q TopIEX HP may be evaluated in monoclonal antibody downstream purification.

Depending on antibody properties and process conditions, potential applications include:

• Intermediate purification

• Flow-through polishing

• Host-cell protein reduction

• Residual DNA reduction

• Aggregate-related impurity reduction

• Process impurity removal

Final process mode should be selected according to antibody pI, pH, conductivity and impurity profile.

Recombinant Protein Purification

Potential applications include:

• Recombinant protein purification

• Protein fractionation

• Enzyme purification

• Intermediate purification

• High-resolution polishing

• Product-related impurity separation

The smaller HP bead format is especially useful when closely related protein species require improved chromatographic resolution.

Other Bioprocess Applications

Strong anion exchange chromatography may also be evaluated for:

• Viral vector purification

• Virus purification

• Plasmid DNA purification

• Nucleic acid purification

• Vaccine-related process development

• Biopharmaceutical downstream processing

Modern process-scale AEX media are used across proteins, monoclonal antibodies, viruses, viral vectors and plasmid DNA purification workflows.

General Q TopIEX HP Purification Workflow

1. Pack the Column

Prepare a homogeneous slurry and pack Q TopIEX HP into a suitable chromatography column.

2. Equilibrate

Equilibrate the packed bed with the selected starting buffer.

3. Prepare the Sample

Clarify the sample and adjust pH and conductivity to the required binding conditions.

4. Load the Sample

Apply the sample at an optimized flow rate.

5. Wash the Column

Remove unbound and weakly interacting impurities.

6. Elute the Target

Increase salt concentration or modify buffer conditions to selectively elute bound biomolecules.

7. Regenerate

Remove residual bound material using a validated regeneration procedure.

8. Re-Equilibrate

Return the column to the starting conditions before the next cycle.

Factors Affecting Separation Resolution

Important method-development parameters include:

• Buffer pH

• Protein pI

• Conductivity

• Salt concentration

• Sample volume

• Protein concentration

• Resin loading

• Flow rate

• Residence time

• Column bed height

• Gradient slope

• Sample viscosity

For high-resolution purification, loading, flow rate and gradient conditions should be carefully optimized.

Salt Gradient Elution

A salt gradient is commonly used to separate biomolecules according to differences in ionic interaction strength.

Typical strategies include:

• Linear gradient

• Step gradient

• Multi-step gradient

A shallower gradient may improve separation of closely related components, while a steeper gradient can shorten processing time.

The optimal gradient should be established experimentally.

Q TopIEX HP vs. Q TopIEX FF

Choose Q HP when separation resolution and final purity are the main priorities.

Choose Q FF when process throughput and faster flow are more important.

Q Strong Anion Exchange vs. DEAE Weak Anion Exchange

Q media are especially useful when robust strong anion exchange behavior is required.

Why Choose 34 μm Instead of 90 μm?

Smaller particles generally improve column efficiency and chromatographic resolution.

Therefore:

34 μm HP media → Higher resolution and polishing

90 μm FF media → Faster flow and higher process throughput

The preferred product depends on the purification stage and process objective.

High-Resolution Process Development

Q TopIEX HP can be evaluated when process developers need:

• Better impurity separation

• Improved peak resolution

• Higher final purity

• Separation of closely related proteins

• Intermediate purification

• Final polishing

Cytiva similarly positions its 34 μm Q High Performance resin specifically where resolution and capacity have priority during intermediate and polishing steps.

Quality Control for Bulk Production

Important quality parameters may include:

• Agarose concentration

• Average particle size

• Particle-size distribution

• Bead morphology

• Crosslinking consistency

• Q functionalization

• Ion exchange performance

• Chromatographic resolution

• Packed-bed stability

• Binding performance

• Batch-to-batch consistency

• Storage stability

Why Choose SHBC Q TopIEX HP?

• 34 μm high-resolution particles

• Crosslinked 6% agarose matrix

• Strong Q anion exchange chemistry

• Designed for intermediate purification

• Designed for polishing chromatography

• Suitable for protein purification

• Suitable for biopharmaceutical process development

• Laboratory sample evaluation

• Pilot-scale supply

• Bulk manufacturing capability

• Custom packaging support

Frequently Asked Questions

What does Q mean?

Q refers to quaternary ammonium, the strong anion exchange functional group.

What does HP mean?

HP means High Performance and identifies the smaller-particle, higher-resolution chromatography series.

Is Q TopIEX HP a strong anion exchanger?

Yes. It uses Q quaternary ammonium strong anion exchange groups.

What is the matrix?

Q TopIEX HP is based on crosslinked 6% agarose.

What is the average particle size?

The average particle size is 34 μm.

Why does Q HP provide higher resolution?

Its smaller 34 μm particles can provide greater packed-bed efficiency and better chromatographic resolution than larger Fast Flow particles.

What is Q TopIEX HP mainly used for?

It is primarily designed for intermediate purification and polishing of proteins and other biomolecules.

What is the difference between Q HP and Q FF?

Q HP uses smaller 34 μm particles and prioritizes resolution. Q FF uses larger 90 μm particles and prioritizes fast flow and process throughput.

Can Q TopIEX HP be used for monoclonal antibody purification?

Yes. It may be evaluated for suitable intermediate and polishing steps in monoclonal antibody downstream processes.

Can it be used for recombinant proteins?

Yes. Q TopIEX HP can be evaluated for high-resolution purification and polishing of recombinant proteins.

Can Q TopIEX HP remove DNA and host-cell proteins?

Strong anion exchange chromatography can be used to reduce negatively charged process impurities such as DNA and selected host-cell proteins. Performance should be validated for each process.

What is the dynamic binding capacity?

Binding capacity depends on the test molecule, buffer, conductivity, residence time and test method. Use SHBC product-specific QC data rather than specifications from another manufacturer's Q HP resin.

What is the maximum flow rate?

Maximum recommended flow depends on column geometry, bed height and pressure. SHBC product-specific pressure-flow data should be used when defining operating conditions.

Can SHBC supply bulk quantities?

Yes. Shanghai SanYu Biotechnology Co., Ltd. supports laboratory evaluation, pilot-scale requirements and bulk supply of Q TopIEX HP chromatography media.

Request Q TopIEX HP Samples and Bulk Pricing

Contact Shanghai SanYu Biotechnology Co., Ltd. for Q TopIEX HP samples, technical information and bulk quotations.

Please provide:

• Target protein or biomolecule

• Target protein pI

• Feed material

• Purification stage

• Required resolution

• Column dimensions

• Required resin volume

• Development or production scale

• Estimated annual demand

SHBC Q TopIEX HP is designed for research, process development, intermediate purification and high-resolution polishing applications.