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Merck
CN

95581

Micro particle size standard based on polystyrene monodisperse

size: 0.2 μm

Synonym(s):

Monodisperse polystyrene latex particles (0.2 μm), monodisperse polystyrene microbeads (0.2 μm), monodisperse polystyrene microspheres (0.2 μm), polystyrene monodisperse microparticles (0.2 μm), Size standards

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About This Item

MDL number:
MFCD00243243
UNSPSC Code:
41116107
NACRES:
NA.25

Key Documents

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grade

analytical standard

Quality Level

100

form

aqueous suspension

crosslinking

0 % cross-linked

concentration

2% (solids)

technique(s)

diffraction/scattering: suitable

particle size

0.2 μm std dev <0.03 μm

application(s)

cosmetics
environmental
food and beverages
pharmaceutical

format

neat

storage temp.

2-8°C

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General description

Monodisperse polystyrene based micro particles (size: 0.2 μm) are a particle size standard, ideal to determine particle size distribution (PSD) of test samples.

Application

Used for equipment particle size calibration.
Monodisperse polystyrene latex particles are also used to find the PSD of colloidal dispersions.

Features and Benefits

  • suitable for routine instrument calibration checks, testing and corrections
  • available in 5 mL and 10 mL pack sizes as neat samples

Analysis Note

For every lot exact values of particle size and standard deviation are determined with an accuracy of 0.001 μm. The size determination of these particles follows procedures described by National Institute of Standards and Technology (NIST, USA) respectively by the Community Bureau of Reference (BCR), esp.:
  • Transmission electron microscopy (TEM)
  • Scanning electron microscope
  • Light microscopy
  • Coulter™ counter with MDF-system
Calibration of equipment is carried out with NIST-respectively BCR-particle size standards.

Legal Information

Coulter is a trademark of Beckman Coulter, Inc.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

410.0 °F

Flash Point(C)

210 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCP0595
BCCN5683
BCCN3213
BCCN3212
BCCM8594

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JooWon Lim et al.
Optics express, 25(24), 30445-30458 (2017-12-10)
Optical diffraction tomography (ODT) using Born or Rytov approximation suffers from severe distortions in reconstructed refractive index (RI) tomograms when multiple scattering occurs or the scattering signals are strong. These effects are usually seen as a significant impediment to the
In vitro digestion of emulsions: diffusion and particle size distribution using diffusing wave spectroscopy and diffusion using nuclear magnetic resonance
Marze S, et al.
Soft Matter, 8(42) (2012)

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