Vivaproducts - Protein Purification and Separation Technologies

Multi-well dialysis systems

Gentle, reproducible buffer exchange, for LNPs, proteins and nucleic acids

Xpress Dialyzers are ready-to-use multi-well dialysis systems designed for high-throughput small volume workflows. Achieve efficient buffer exchange and purification with minimal sample loss, in formats compatible with automated liquid handling.

99%
Salt removal (with XDB)
10 to 1000 µL
Sample volume range
96 well
Compatible format
Typical LNP buffer exchange workflow
Load LNP or protein sample
10 to 1000 µL per well, up to 96 wells
Dialyze to remove ethanol or salts
Gentle diffusion preserves biomolecule integrity
Recover purified sample
High recovery, reproducible batch to batch
Trusted for
LNP buffer exchange and purification
mRNA LNP formulation workflows
Protein and antibody desalting
RNA and DNA sample prep
2X Faster Dialysis
Drug delivery nanoparticle dialysis

Why Xpress Dialyzers

Designed for efficient, high-throughput dialysis

Xpress Dialyzers combine a ready-to-use multi-well format with unique cartridge geometry that reduces dialysis time, preserves sample integrity, and scales into fully automated workflows.

Gentle dialysis for sensitive samples

Diffusion-driven membrane exchange preserves the integrity of sensitive samples including lipid nanoparticles, mRNA formulations, antibodies, and proteins throughout the purification process.

Rapid buffer exchange by design

Unique short-diffusion-pathway cartridge geometry significantly reduces dialysis time compared to conventional cassettes or tubing. Remove ethanol, salts, and other small molecules quickly and efficiently.

96-well and 48-well plate formats

Process up to 96 samples simultaneously in a standard deep well plate format. Ideal for LNP screening workflows, formulation development, and any application requiring parallel processing of multiple conditions.

Reproducible results across batches

Consistent cartridge geometry and well-to-well uniformity deliver reproducible dialysis results across all samples in a plate. Reduce variability in formulation screening and protein buffer exchange studies.

Multiple MWCO options

Available in MWCO formats suited to proteins, nucleic acids, and nanoparticle formulations. Select the right cutoff to retain your sample while efficiently removing ethanol, salts, or other low molecular weight species.

Automation compatible

Validated XYZ liquid handling coordinates are available for major automated platforms including Hamilton and Tecan systems. Integrate dialysis directly into high-throughput LNP formulation and screening pipelines.

Performance overview

Key performance figures

Up to 99%
Salt removal with XDB Dialysis Box
10 to 1000 µL
Sample volume range across formats
96 wells
Maximum throughput per run
2x faster
Purification with XDB vs standard deep well plate

Optional accessory

XDB Xpress Dialysis Box

The optional XDB replaces the standard deep well plate with a large shared buffer volume, achieving near-complete salt and ethanol removal without repeated buffer exchanges. Compatible with all MD dialyzers and ideal for LNP and antibody purification workflows where thorough small molecule removal is critical. XDB Refill Kits allow simple cartridge replacement while maintaining all design benefits.

~0%
Salt removal
No buffer exchange needed

Products

Choose by sample volume and format

All Xpress Dialyzers are available with multiple MWCO options and are compatible with standard laboratory and automated liquid handling workflows.

MD100 Xpress Micro Dialyzer

Small volume dialysis for high-throughput LNP screening, protein desalting, and nucleic acid purification. The short 0.75 mm diffusion pathway enables fast, efficient buffer exchange.

Sample volume 10 to 100 µL
Format 96 well deep well plate
Ideal for LNP formulation screening, protein and nucleic acid purification

MD300 Xpress Micro Dialyzer

Larger microvolume format for LNP buffer exchange, mRNA formulation workflows, and protein and antibody purification at scale in a standard 96-well format.

Sample volume 50 to 300 µL
Format 96 well deep well plate
Ideal for LNP and mRNA buffer exchange, mAb and protein purification

ED300 Xpress Equilibrium Dialyzer

A unique equilibrium dialysis system for clinical sample processing including free hormone testing. Buffer is pipetted directly into the top of the dialyzer for simple, reliable setup.

Sample volume 50 to 300 µL
Format 96 well deep well plate
Ideal for Free hormone testing (testosterone, cortisol, FT3, FT4)
Buffer can be pipetted directly into top of dialyzer

MD1000 Xpress Mini Dialyzer

For larger sample volumes requiring gentle dialysis in a 48-well format. Well suited to protein buffer exchange, antibody preparation, and drug delivery nanoparticle workflows.

Sample volume 150 to 1000 µL
Format 48 well deep well plate
Ideal for Protein and antibody buffer exchange, nanoparticle desalting
Buffer can be pipetted directly into top of dialyzer

Applications

Validated across biotech workflows

LNP formulation and purification

Xpress Dialyzers support LNP buffer exchange and desalting, ethanol removal from LNP formulations, and mRNA LNP formulation screening — with gentle, reproducible dialysis at scale.

5+ workflows
covered by a single product family

Protein and antibody workflows

Protein and mAb buffer exchange
Antibody desalting and purification
Proteomic sample preparation

Nucleic acid sample prep

mRNA buffer exchange
RNA and DNA purification
Oligonucleotide desalting

Drug development

Drug delivery nanoparticle dialysis
Plasma protein binding studies
Equilibrium dialysis assays

Automated liquid handling

Hamilton STAR integration
CyBi-FeliX system compatibility
XYZ coordinates for major platforms

Free sample request

Try Xpress Dialyzers in your workflow at no cost

Tell us about your application and we will send the right dialyzer format and MWCO directly to your lab. A specialist will follow up to help you optimise your protocol, whether you are working with LNPs, proteins, mAbs, or nucleic acids.

Receive the right format and MWCO for your sample type
Access to validated protocols and application notes
Follow-up support from a Vivaproducts application specialist
No obligation, just hands-on data from your own samples
Thanks! Your request has been received. A specialist will be in touch shortly.

By submitting, you agree to be contacted by a Vivaproducts specialist. No spam. See our privacy policy.

Our Products