Gold Shell Microspheres

Gold Shell Microspheres

Core-shell gold microspheres with standard nominal diameters of 290–310 nm and red, purple or black visual signals, developed for lateral flow and rapid immunoassay applications.

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Product: Gold Shell Microspheres

Product Overview

Gold Shell Microspheres feature a core-shell structure, relatively large particle size and distinctive surface properties for rapid immunoassay development. They are designed as an alternative labeling material for applications where stronger visual signals and improved assay sensitivity are required.

Product Range

Product Code Color Nominal Diameter Concentration Surface Pack Size*
LXSG29 Red 290 nm 20 OD Plain 5 mL, 50 mL, 200 mL, 500 mL
LXSG30 Purple 300 nm 20 OD Plain 5 mL, 50 mL, 200 mL, 500 mL
LXSG31 Black 310 nm 20 OD Plain 5 mL, 50 mL, 200 mL, 500 mL

* Custom pack sizes are available upon request.

Starter Pack

A starter pack containing 5 mL each of red, purple and black Gold Shell Microspheres is available for early-stage R&D evaluation, allowing developers to compare different signal options before selecting a suitable material for further assay optimization.

Key Features

  • Core-shell particle structure for rapid immunoassay development.
  • Designed to provide higher sensitivity than traditional gold nanoparticles in suitable assay systems.
  • One-step antibody coupling procedure.
  • Simple centrifugation conditions of approximately 500 × g for 5 minutes.
  • Red, purple and black signal options for different assay-development requirements.

Particle Size

The supplied technical information describes a product family particle-size range of approximately 280–320 nm. Standard products are available with nominal diameters of 290 nm, 300 nm and 310 nm.

Storage & Stability

Store at 2–8°C. Shelf life is 18 months under the recommended storage conditions.

Intended Applications

Suitable for lateral flow and rapid immunoassay development, antibody coupling, signal optimization and R&D evaluation. Final assay performance should be verified using the intended antibody system, membrane configuration and sample matrix.

OEM & Technical Support

Contact EXIMIO BIOTEC for sample evaluation, product selection, assay-development support, customized packaging and quotation information.