Thermo Scientific™ Color-Rich Dyed Carboxylate-Modified Particles

Obtain superior test sensitivity in qualitative and quantitative lateral flow tests with Thermo Scientific™ Color-Rich Dyed Carboxylate-Modified Particles.

Brand: Thermo Scientific™

Manufacturer Part Number: DBK1040CB

100 ML COLOUR-RICH DYED PARTICLES - BLACK POLYSTYRene microspheres, 0,40µm, 4% solids, Carboxylate-m

UNSPSC: 41116009

Code: LE

Additional Details:
Additional Details: Weight: 0.25600kg

Product Code. 11898273

Quantity Price
1 £ 1020.0 / Each
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Description and Specification


Uniformity <5% CV
Parking Area 55A²/group
Storage Requirements Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
Binding Property Carboxylate-modified
Particle Size (Metric) 0.4µm
Stability Product stable for a minimum of 24 months
Dye Type Black
Color Black
Concentration 4% solids
Contents Dyed polystyrene microspheres in water
Diameter (Metric) Mean 0.4µm
Particle Size 0.4µm
Surface Modification Carboxylate-Modified
Refractive Index 1.59 at 589nm (25°C)
Diameter (Metric) 0.4µm
Diameter (Metric) Nominal 0.4µm
Volume (Metric) 100mL
Quantity 100mL
Density 1.05g/cm3
Additive None
Particle Density 1.06g/cm³
Includes Certificate of Analysis
Composition Polystyrene or Polystyrene with coploymer grafted surface

These particles are internally dyed using the Thermo Scientific™ Color-Rich internal dyeing method or by utilizing the proprietary Firefli™ fluorescent dyeing process. Color-Rich dyeing methods provide exceptional color saturation, prevent dye leaching in aqueous media and leave the surface free for covalent coupling through a COOH group and optimal immunological reactivity.

  • Dye-free surface for coupling
  • High protein binding capacity
  • Hydrophilic—readily adsorbs and couples proteins
  • Optimizes assays by controlling sensitivity, specificity and stability
  • Optimized acid content
  • Easy one-step covalent coupling protocols
  • Ensures reproducibility
  • Binds ligands without dye interference
  • Offers the optimal size for most latex-based lateral flow tests: 0.4μm nominal diameter (DB1040CA through DBK1040CB)
  • Ensures uniform migration through membranes with a coefficient of variation (CV) in diameter of less than 5%

Recommended for:

  • Clinical diagnostics
  • Molecular biology
  • Lateral flow, turbidimetric and slide aggulation assays