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Key Documents

Safety Information

59769

Sigma-Aldrich

Micro particles based on polystyrene

size: 500 nm

Synonym(s):

Latex beads from PS

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About This Item

MDL number:
MFCD00243243
UNSPSC Code:
12352116
NACRES:
NA.32

Quality Level

100

form

aqueous suspension

concentration

10% (solids)

particle size

500 nm

density

1.05 g/cm3

storage temp.

2-8°C

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General description

Micro Particles or Latex Beads, commonly known as polystyrene microparticles, are negatively charged colloidal particles. The microparticles are produced through a polymerization reaction of styrene under controlled conditions. The conducive environment of the reaction induces spontaneous coalescent bead formation. Micro Particles or Latex beads are supplied in aqueous solutions composed of polymer particles with water. Polystyrene′s refractive index at 589 nm is 1.5905 and 1.602 at 486 nm.

Application

Micro Particles or Latex Beads is used for a wide variety of applications like:

  • Electron Microscopy.
  • Cell Counter Calibration.
  • Immunodiagnostics, especially for latex agglutination tests, and
  • Phagocytosis Research.

Analysis Note

For every lot exact values of particle size and standard deviation are determined with an accuracy of 0.01 μm using a Coulter Multisizer.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

59769-10ML-F:
59769-5ML-F:
59769-10ML-BULK-F:
59769-5ML-BULK-F:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Shunmugaperumal Tamilvanan et al.
PDA journal of pharmaceutical science and technology, 62(3), 177-190 (2008-07-30)
The objective of this study is to select a multiple-unit sustained-release formulation and to compare it with both commercial immediate and single unit sustained-release capsules and also to determine whether an in vitro-in vivo correlation exists for single- and multiple-
Elizabeth M Walker et al.
Journal of colloid and interface science, 363(1), 307-313 (2011-08-16)
We have studied polydimethylsiloxane (PDMS)-in-1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF(6)]) Pickering emulsions stabilized by polystyrene microparticles with different surface chemistry. Surprisingly, in contrast to the consensus originating from oil/water Pickering emulsions in which the solid particles equilibrate at the oil-water droplet interfaces and
Fiona A Sharp et al.
Proceedings of the National Academy of Sciences of the United States of America, 106(3), 870-875 (2009-01-14)
Many currently used and candidate vaccine adjuvants are particulate in nature, but their mechanism of action is not well understood. Here, we show that particulate adjuvants, including biodegradable poly(lactide-co-glycolide) (PLG) and polystyrene microparticles, dramatically enhance secretion of interleukin-1beta (IL-1beta) by
Sensitive Mie scattering immunoagglutination assay of porcine reproductive and respiratory syndrome virus (PRRSV) from lung tissue samples in a microfluidic chip.
Song JY, Lee CH, Choi EJ, Kim K, et al.
J. Virol. Methods, 178, 31-38 (2011)

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