How to improve a low 260/230 ratio
Identify salt, guanidinium, phenol, ethanol, and matrix carryover; choose cleanup based on the contaminant and downstream use.
Read the GuideTechnical resource center
Practical guides for biotech assays and biomolecular workflows
Evidence-aware guidance for researchers, biotechnology teams, and procurement professionals evaluating ELISA development, nucleic acid purification, recombinant proteins, and technology transfer.
Featured technical guides
Each guide addresses a real experimental or transfer decision and connects to a relevant VexisBio service when additional support is needed.
High-sensitivity ELISA troubleshooting
Separate weak signal, high background, matrix interference, poor precision, and calibration problems before optimizing variables.
Read the GuideBiotech technology transfer checklist
Define scope, materials, method details, acceptance criteria, training, documentation, and change control before transfer.
Read the ChecklistExplore by capability
Custom ELISA development
Assay design, antibody pairing, optimization, matrix evaluation, and fit-for-purpose validation planning.
Recombinant protein services
Bacterial, insect, or mammalian expression planning, protein purification, QC, and assay-ready reagents.
DNA and RNA purification
Extraction, cleanup, concentration, QC, and downstream-use preparation for research samples.
Have a technical question not covered here?
Send the target, sample type, current workflow, observed problem, and the decision the result must support.
Discuss the Project