Covalent Conjugation Kit – BioReady Gold Colloid

Regular price $1,130.00 USD
Select Diameter

Customers outside of the US & Canada: please visit your local distributor’s website to purchase this item using its SKU, or contact us here. Thank you!

In-stock items typically ship from our warehouse within 5 business days.

This kit eliminates the need to pre-screen and validate critical reagents and supplies to ensure your best chance of success. Kit components include:

  • BioReady carboxyl 40 nm or 80 nm gold particles, 20 OD
  • Desalting column for removal of interfering reagents (NaCl, azide, tris, glycine)
  • EDC and Sulfo-NHS
  • All buffers necessary to complete the conjugation
  • Step-by-step conjugation procedure and optimization
  • Complementary technical and assay development support available upon request; contact us at

No experience needed! Our kit is the optimal solution for conjugation experts and anyone new to lateral flow looking to improve existing tests or develop the next novel LF assays.

Size 40 nm 80 nm
Surface Carboxyl
Description Covalently bound. Conjugatable surface.
Solvent USP Purified Water
Surface chemistry PEG12-carboxylic acid
Size 40 nm 80 nm
TEM Diameter 40 ± 4 nm 80 ± 5 nm
CV ≤ 15%
Size 40 nm 80 nm
Example Certificate of Analysis (CoA) Download Download
Safety Data Sheet (SDS) 20 OD (BioReady)
Storage & Handling Download
Protocols 40 nm Kit Components 80 nm Kit Components
Antibody Purification
Procedure for Gold Conjugation Kit
Covalent Conjugation Tutorial Video
Expected Ranges
Size 40 nm 80 nm
Hydrodynamic diameter (DLS) TEM diameter + 0–10 nm
Zeta potential ≤ –25 mV
pH of solution 5.5–8.0
Peak wavelength (λmax) 520–550 nm