Protein A Colloidal Gold for Lateral Flow


In Stock & Ready to Ship

Functionally tested Protein A conjugated gold

Perfect for Lateral Flow Development and use in final product

40nm gold particles conjugated to Protein A are offered in 10 OD 1mL size.  If a different OD or amount is required please inquire:


Protein A 40 nm Colloidal Gold Spheres (1mL)

Product image shows functional testing of Protein A 40nm colloidal gold on a lateral flow test. Protein A 40nm colloidal gold was incubated in lateral flow running buffer alone or in the presence of a limiting amount of monoclonal antibody that targets the chemical-BSA conjugate. The gold was then applied to the sample port of a cassette containing a lateral flow strip sprayed with a chemical conjugate (Chemical-BSA) on the test line and a goat anti mouse antibody as the control line. The data demonstrates the specificity and robustness of the Protein A 40nm colloidal gold.

Our products are produced in a state-of-the-art manufacturing facility that enable rapid turnaround times while ensuring batch to batch consistency and reliability.

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40nm Colloidal Gold for Lateral Flow


Specifications 1OD 40nm Gold (1L)

Number of particles/mL 5.2-7.2 x 1010
Gold Concentration (mg/mL) 3.7-4.2 x 10-2
Molar Concentration (moles/liter) 8-12 x 10-11
Particle Diameter 40 nm /- 1.5

30nm Colloidal Gold for Lateral Flow


Specifications 1OD 30nm Gold (1L)

• Number of particles/mL 1.3-2 x 1011
• Gold Concentration (mg/mL) 4.2-4.7 x 10-2
• Molar Concentration (moles/liter) 2.2-3.3 x 10-10
• Particle Diameter 30 nm /-1.5

10nm Colloidal Gold for Lateral Flow


Specifications 1OD 10nm Gold (1L)

• Number of particles/mL 2.5- 8.6 x 1012
• Gold Concentration (mg/mL) 5.7- 6.0 x 10-2
• Molar Concentration (moles/liter) 0.4-1.4 x 10-8
• Particle Diameter 10 nm /- 1.5