Particle Measurement Research Group

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CALIBRATION SERVICES & REFERENCE MATERIALS

Followings are calibration services and reference materials provided by our groups.
Please visit the NMIJ Home Page for further information.

Particle Size (calibration services)

  • Number-average diameter 20 nm – 1 µm
  • Particle size distribution width (polystylene latex particles ranging from 20 nm to 300 nm in diameter)

Number-average Particle Mass (calibration services)

  • Number-average particle mass 500 ag – 500 fg

Particle Number Concentration, Air-borne (calibration services)

  • Concentration 1×103 cm−3 – 4×103 cm−3 (particle size 10 nm − 300 nm)
  • Concentration 4×103 cm−3 – 4×104 cm−3 (particle size 10 nm − 200 nm)
  • Concentration 1×100 cm−3 – 1×105 cm−3 (particle size 30 nm − 60 nm)

Particle Number Concentration, Liquid-borne (calibration services)

  • Concentration 5 000 particles/g – 2 000 000 particles/g (diameter 2 µm – 20 µm)
  • Concentration 500 particles/g – 5 000 particles/g (diameter 2 µm – 20 µm)

Particle Number, Air-borne (calibration services)

  • Detection efficiency of optical particle counters (particle number- or particle number concentration-based)
  • Particle counting frequency: 10 s−1 – 100 s−1
  • Particle size: 0.5 µm − 10 µm

Size and Size Distribution of Nanoparticles (reference materials)

  • CRM 5701-a Polystyrene latex nanoparticle (120 nm)
  • CRM 5702-a Polystyrene latex nanoparticle (150 nm)
  • CRM 5703-a Polystyrene latex nanoparticle (200 nm)

Polymers (reference materials)

  • CRM 5001-a Polystyrene 2400
  • CRM 5002-a Polystyrene 500
  • CRM 5004-a Polystyrene 1000
  • CRM 5005-a Poly(ethylene glycol) 400
  • CRM 5006-a Poly(ethylene glycol) 1000
  • CRM 5007-a Poly(ethylene glycol) 1500
  • CRM 5010-a Poly(ethylene glycol) Nonylphenyl Ether

  • CRM 5011-a Poly(ethylene glycol)(23mer)

  • RM 5012-a Polystyrene (for Light Scattering)

  • CRM 5008-a Polystyrene (Polydisperse)

  • RM 5009-a Polystyrene 8500

Specific Surface Area of Powders (reference materials)

  • RM 5711-a Titanium (IV) Oxide nanopartiles (11 m2/g, rutile-type）
  • RM 5712-a Titanium (IV) Oxide nanopartiles (57 m2/g, rutile-type, surface modified with fatty acid-coated)
  • RM 5713-a Titanium (IV) Oxide nanopartiles (76 m2/g, rutile-type, surface modified with isobutyl groups)