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Retroreflective Half-Shell Aluminum Coated Solid Glass Microspheres
Retroreflective Half-Shell Aluminum Coated Solid Glass Microspheres

Retroreflective Aluminum-Coated Solid Barium Titanate Glass Microspheres ~4.5g/cc - 30-100um

Product Line: P2453BTA

P2453BTA metallized spheres product line consists of solid, barium titanate glass microspheres with a 40-50 micron typical mean diameter, a tight particle size distribution, with an upper sphere diameter of less than 100 micron. The microspheres incorporate a hemispherically coated aluminum shell which provides maximum retroreflection. In bulk, these metallized glass spheres appear as a grey powder. Under an optical microscope, each individual microsphere displays a partial aluminum coating.

Also see other Barium Titanate Glass Spheres.

P2453BTA is a product of Prizmalite distributed through Cospheric LLC.

The spheres are offered in dry powder form with the following coating options:

  • Uncoated - no surface treatment
  • Silane Coating (S2) - for improved dispersion in aqueous systems (~76 degree contact angle)
  • Fluorochemical Coating (F35) - NEW FORMULA - for improved hydrophobicity to bring the spheres to the surface in solvent based systems
  • Fluorochemical Coating (F1) - RETIRED FORMULA - for improved hydrophobicity to bring the spheres to the surface in solvent based systems

Guidelines for Using Retroreflective Spheres

Physical Characteristics:
Coating: Half-shell Aluminum
Core: Solid Barium Titanate Glass
Sphericity: >90% of particles are spherical
Density: 4.1-4.5g/cc, exact density varies by lot and is specified for the purchased lot of material
Index of Refraction: ~1.9
Appearance: Grey powder
Hardness: 55 – 65 on Gardner Scale
Crush Strength: 30,000 psi

Select Particle Size and Density:
Item # Description/Size Status Price Qty
P2453BTA-4.3 30-53um - 25g
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.3g/cc 30-53um - Uncoated - 25g
 Email Us $241.14
P2453BTA-4.3 30-53um - 1kg
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.3g/cc 30-53um - Uncoated - 1kg
 In Stock $714.64
P2453BTA-4.3 30-63um - 1kg
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.3g/cc 30-63um - Uncoated - 1kg
 In Stock $606.22
P2453BTA-4.2 30-100um - 25g
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.2g/cc 30-100um - Uncoated - 25g
 In Stock $133.37
P2453BTA-4.2 30-100um - 1kg
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.2g/cc 30-100um - Uncoated - 1kg
 In Stock $223.24
P2453BTA-4.49 30-100um - 25g
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres ~4.3g/cc 30-100um - Uncoated - 25g
 In Stock $133.37
P2453BTA-S2-4.2 30-100um - 25g
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.2g/cc 30-100um - Silane Coating - 25g
 In Stock $146.84
P2453BTA-S2-4.2 30-100um - 1kg
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.2g/cc 30-100um - Silane Coating - 1kg
 In Stock $239.80
P2453BTA-F1-4.49 30-100um - 25g
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres ~4.3g/cc 30-100um - Fluorochemical Coating - 25g
 In Stock $146.84
P2453BTA-F1-4.49 30-100um - 1kg
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres ~4.3g/cc 30-100um - Fluorochemical Coating - 1kg
 In Stock $239.80
P2453BTA-F35-4.2 30-100um - 25g
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.2g/cc 30-100um - Fluorochemical Coating - 25g
 In Stock $146.84
P2453BTA-F35-4.2 30-100um - 1kg
Retroreflective Aluminum Coated Solid Barium Titanate Glass Microspheres 4.2g/cc 30-100um - Fluorochemical Coating - 1kg
 In Stock $239.80
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