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Key Documents

Safety Information

43302

Sigma-Aldrich

Micro particles based on polystyrene

size: 100 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

100 nm std dev ≤0.01 μm

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

43302-5ML-BULK-F:
43302-5ML-F:
43302-10ML-F:
43302-10ML-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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Jessie E P Sun et al.
Integrative biology : quantitative biosciences from nano to macro, 4(1), 84-92 (2011-11-29)
Integrins play a key role in cell-cell and cell-matrix interactions. Artificial surfaces grafted with integrin ligands, mimicking natural interfaces, have been used to study integrin-mediated cell adhesion. Here we report the use of a new chemical engineering technology in combination
César Costa Vera et al.
Rapid communications in mass spectrometry : RCM, 19(2), 133-146 (2004-12-14)
The delayed ion extraction method has been used to study characteristics of the initial velocity distributions of positive and negative ions produced simultaneously by laser desorption/ionization (LDI) from non-impacted single aerosol polymeric particles, using a bipolar time-of-flight (TOF) instrument (LAMPAS
Thomas Tschernig et al.
Experimental and toxicologic pathology : official journal of the Gesellschaft fur Toxikologische Pathologie, 65(6), 883-886 (2013-01-16)
Microparticles (MP) and fibres can be inhaled and cause inflammatory lung diseases. So far MP and fibres have not observed directly in the lung of living animals. A direct visualisation of particles and fibres would be important to study interactions

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