34um High-Resolution Ion Exchange Chromatography Media SP HP 6% SP TopIEX HP

34 μm SP HP High-Resolution Cation Exchange Chromatography Media – SP TopIEX HP

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

The agarose matrix is functionalized with sulfopropyl (SP) strong cation exchange groups for charge-based separation of proteins and other biomolecules.

The smaller 34 μm particle size provides higher chromatographic resolution, making SP TopIEX HP particularly suitable for intermediate purification and polishing applications.

SP TopIEX HP Technical Specifications

What Is SP HP Chromatography Media?

SP HP is a high-performance strong cation exchange chromatography medium designed for applications requiring improved separation resolution.

The negatively charged SP ligand interacts with positively charged proteins and other biomolecules under suitable pH and conductivity conditions.

Commercial SP High Performance media also use approximately 34 μm crosslinked agarose beads and sulfopropyl groups for high-resolution intermediate and polishing chromatography.

34 μm Beads for High-Resolution Separation

Particle size is an important factor in chromatographic efficiency.

Compared with larger Fast Flow particles, the 34 μm HP format is designed to provide:

• Higher chromatographic resolution

• Improved column efficiency

• Better peak separation

• Improved separation of closely related proteins

• Suitable performance for intermediate purification

• Suitable performance for polishing chromatography

This makes SP TopIEX HP suitable when product purity and separation resolution are more important than maximum process flow.

6% Crosslinked Agarose Matrix

SP TopIEX HP uses a crosslinked 6% agarose matrix.

Key characteristics include:

• Hydrophilic agarose structure

• Crosslinked bead matrix

• 34 μm average particle size

• Porous structure for biomolecule access

• Suitable packed-bed stability

• Low nonspecific hydrophobic interaction

• Suitable for preparative ion exchange chromatography

Crosslinked agarose is also used in established SP High Performance chromatography media designed for industrial intermediate and polishing applications.

How SP Strong Cation Exchange Works

SP TopIEX HP contains negatively charged sulfopropyl functional groups.

Under suitable conditions, positively charged proteins interact with the SP ligand.

Typical process:

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

Important factors include:

• Protein isoelectric point (pI)

• Buffer pH

• Conductivity

• Ionic strength

• Salt concentration

• Sample concentration

• Loading amount

Cation exchange chromatography is based on the interaction of positively charged biomolecules with negatively charged chromatography media.

Key Advantages of SP TopIEX HP

• 34 μm average particle size

• High-resolution separation

• Crosslinked 6% agarose matrix

• Sulfopropyl SP functional groups

• Strong cation exchange chemistry

• Suitable for protein purification

• Suitable for intermediate purification

• Suitable for polishing chromatography

• Suitable for complex protein mixtures

• Suitable for bioprocess development

• Laboratory and bulk supply available

Protein Purification Applications

SP TopIEX HP can be evaluated for purification of:

• Recombinant proteins

• Monoclonal antibodies

• Basic proteins

• Enzymes

• Peptides

• Protein complexes

• Protein variants

• Other positively charged biomolecules

Strong CEX media are widely used for high-resolution purification of basic and neutral proteins and peptides.

Intermediate Purification

SP TopIEX HP is especially suitable for intermediate purification after an initial capture step.

Potential goals include:

• Increasing target purity

• Protein fractionation

• Removing host-cell proteins

• Reducing process impurities

• Separating protein variants

• Removing selected aggregates

• Preparing material for final polishing

The smaller 34 μm particle size is designed for applications where chromatographic resolution becomes increasingly important.

Polishing Chromatography

Polishing is a major application area for high-resolution SP media.

Potential applications include:

• Aggregate reduction

• Host-cell protein reduction

• Product variant separation

• Trace impurity removal

• Final purity improvement

• Charge-based protein separation

Thermo Fisher identifies strong sulfopropyl CEX media as useful for polishing antibodies and other biomolecules, including separation of aggregates, HCP, DNA and related process impurities.

Monoclonal Antibody Purification

SP TopIEX HP may be evaluated in monoclonal antibody downstream processes.

Potential applications include:

• Intermediate purification

• Bind-and-elute polishing

• Aggregate separation

• Charge variant separation

• Host-cell protein reduction

• Process impurity removal

Cation exchange chromatography is commonly used during polishing because optimized pH and conductivity can separate closely related product variants and impurities.

Recombinant Protein Purification

SP TopIEX HP can also be evaluated for:

• Recombinant protein purification

• Enzyme purification

• Protein fractionation

• Intermediate purification

• High-resolution polishing

• Product-related impurity separation

The optimum method depends on the target protein's pI, stability and process conditions.

Why Choose SP Strong Cation Exchange?

SP is a strong cation exchange functional group.

Compared with weak cation exchangers, strong SP media provide more robust ion exchange behavior across a broader operating range.

Potential advantages include:

• Strong cation exchange interaction

• Robust method development

• Suitable for protein capture and polishing

• Effective salt-gradient separation

• Useful for process-scale protein purification

General SP TopIEX HP Purification Workflow

1. Pack the Column

Prepare a homogeneous slurry and pack SP 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 suitable binding conditions.

4. Load the Sample

Apply the sample at an optimized flow rate.

5. Wash

Remove unbound and weakly interacting impurities.

6. Elute the Target

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

7. Regenerate

Remove residual bound material using a validated regeneration method.

8. Re-Equilibrate

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

How to Select Binding pH

For cation exchange chromatography, the target protein generally requires sufficient positive charge to interact with the negatively charged SP ligand.

A practical method-development strategy is to screen several pH conditions below the target protein's pI.

Evaluate:

• Target binding

• Product recovery

• Impurity clearance

• Selectivity

• Peak shape

• Protein stability

The optimum pH should be determined experimentally.

Salt Gradient Elution

Bound proteins can commonly be eluted by increasing ionic strength.

Typical strategies include:

• Linear salt gradient

• Step gradient

• Multi-step gradient

A shallow gradient may improve resolution between closely related protein species, while a steeper gradient can shorten process time.

Factors Affecting High-Resolution Separation

Important optimization parameters include:

• Protein pI

• Buffer pH

• Conductivity

• Sample concentration

• Sample volume

• Protein loading

• Flow rate

• Residence time

• Bed height

• Salt gradient

• Gradient slope

• Sample viscosity

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

SP TopIEX HP vs. SP TopIEX FF

Choose SP HP when separation resolution and final purity are the primary objectives.

Choose SP FF when faster flow and process throughput are the priority.

SP Strong Cation Exchange vs. CM Weak Cation Exchange

SP and CM can provide different selectivity during protein purification.

Why Choose 34 μm Instead of 90 μm?

The two particle sizes serve different purification priorities.

34 μm HP Media

• Higher resolution

• Better peak separation

• Intermediate purification

• Fine purification

• Polishing chromatography

90 μm FF Media

• Faster flow

• Higher throughput

• Lower process pressure

• Capture purification

• Large-scale rapid processing

The preferred resin should be selected according to purification stage and process objective.

High-Resolution Bioprocess Applications

SP TopIEX HP can be evaluated when process developers require:

• Higher product purity

• Better impurity separation

• Separation of closely related proteins

• Aggregate reduction

• Protein variant separation

• Intermediate purification

• Final polishing

Cytiva similarly positions its 34 μm SP High Performance resin for intermediate and final polishing steps where resolution and capacity are priorities.

Quality Control for Bulk Production

Important quality parameters may include:

• Agarose concentration

• Average particle size

• Particle-size distribution

• Bead morphology

• Crosslinking consistency

• SP functionalization

• Ion exchange performance

• Chromatographic resolution

• Packed-bed stability

• Protein binding performance

• Batch-to-batch consistency

• Storage stability

Why Choose SHBC SP TopIEX HP?

• 34 μm high-resolution particles

• Crosslinked 6% agarose matrix

• Strong SP cation exchange chemistry

• Designed for intermediate purification

• Designed for polishing chromatography

• Suitable for protein purification

• Suitable for mAb process development

• Suitable for recombinant proteins

• Laboratory sample evaluation

• Pilot-scale supply

• Bulk manufacturing capability

• Custom packaging support

Frequently Asked Questions

What does SP mean?

SP refers to sulfopropyl, a strong cation exchange functional group.

What does HP mean?

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

Is SP TopIEX HP a strong cation exchanger?

Yes. It uses sulfopropyl strong cation exchange groups.

What is the matrix?

SP TopIEX HP is based on crosslinked 6% agarose.

What is the average particle size?

The average particle size is 34 μm.

Why does SP HP provide higher resolution?

The smaller 34 μm particles provide a more efficient packed bed and are designed for improved chromatographic resolution compared with larger Fast Flow particles.

What is SP TopIEX HP mainly used for?

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

What is the difference between SP HP and SP FF?

SP HP uses 34 μm particles and prioritizes high resolution. SP FF uses 90 μm particles and prioritizes high flow and process throughput.

Can SP TopIEX HP be used for monoclonal antibodies?

Yes. It can be evaluated for intermediate and polishing steps in monoclonal antibody purification.

Can it separate protein aggregates?

Strong cation exchange chromatography can be used to separate aggregates and other product-related impurities. Performance should be validated for each protein.

Can SP TopIEX HP be used for recombinant proteins?

Yes. It can be evaluated for high-resolution purification and polishing of recombinant proteins and enzymes.

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 values from another manufacturer's SP HP resin.

What is the maximum flow rate?

Maximum recommended flow depends on column dimensions, bed height and operating pressure. SHBC product-specific pressure-flow data should be used for process design.

Is SP TopIEX HP suitable for process scale-up?

Yes. It can be evaluated from laboratory development through pilot and process-scale intermediate or polishing chromatography.

Can SHBC provide bulk quantities?

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

Request SP TopIEX HP Samples and Bulk Pricing

Contact Shanghai SanYu Biotechnology Co., Ltd. for SP 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 SP TopIEX HP is designed for research, process development, intermediate purification and high-resolution polishing applications.