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L1030

Sigma-Aldrich

Latex beads, amine-modified polystyrene, fluorescent yellow-green

aqueous suspension, 1.0 μm mean particle size

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₹9,883.23

About This Item

MDL number:
UNSPSC Code:
12352116
NACRES:
NA.56

₹9,883.23


In StockDetails


form

aqueous suspension

Quality Level

composition

Solids, 2.5%

technique(s)

cell based assay: suitable

mean particle size

1.0 μm

fluorescence

λex ~470 nm; λem ~505 nm

application(s)

cell analysis

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Application

Latex beads, amine-modified polystyrene, fluorescent yellow-green have been used:
  • in the characterization of nano- and microplastics[1]
  • in tendon preparation to label tendon fascicles to enable precise localization of the tissue surface[2]
  • in phagocytosis assay to label spleen cells[3]

Biochem/physiol Actions

Polystyrene latex beads can be used to create latex agglutination systems. It can be used to study the transmission of Mycobacterium leprae, the causative pathogen of leprosy. These beads are also utilized to develop a method for mass screening for both pulmonary and extrapulmonary tuberculosis.

Storage Class Code

10 - Combustible liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Ivan Gusachenko et al.
Biophysical journal, 102(9), 2220-2229 (2012-07-25)
Collagen is a triple-helical protein that forms various macromolecular organizations in tissues and is responsible for the biomechanical and physical properties of most organs. Second-harmonic generation (SHG) microscopy is a valuable imaging technique to probe collagen fibrillar organization. In this
James M May et al.
Archives of biochemistry and biophysics, 440(2), 165-172 (2005-08-02)
Since activated macrophages generate potentially deleterious reactive oxygen species, we studied whether ascorbic acid might function as an antioxidant in these cells. Thioglycollate-elicited murine peritoneal macrophages contained about 3 mM ascorbate that was halved by culture in ascorbate-free medium. However
Soumya M Turaga et al.
Neuro-oncology, 22(11), 1591-1601 (2020-06-28)
Glioblastoma (GBM) is the most aggressive primary brain tumor and has a dismal prognosis. Previously, we identified that junctional adhesion molecule A (JAM-A), a cell adhesion molecule, is highly elevated in human GBM cancer stem cells and predicts poor patient
Amany Ramah et al.
Veterinary immunology and immunopathology, 220, 109991-109991 (2019-12-20)
Tannin is one of the most common phytochemical secondary phenolic metabolites, which is widely distributed in various plant production systems. Dietary intake of tannin can exert different actions on the immune system. The aim of this study was to evaluate
K Walkowiak-Nowicka et al.
Bulletin of entomological research, 108(3), 351-359 (2017-09-13)
In insects, two types of the immune responses, cellular and humoral, constitute a defensive barrier against various parasites and pathogens. In response to pathogens, insects produce a wide range of immune agents that act on pathogens directly, such as cecropins

Questions

1–2 of 2 Questions  
  1. What is the linear chemical formula and molecular weight of the various latex beads with product codes L1528, L1403, L9902, L9529, L9904, L9654, L0780, L0280, L3030, L3280, L5530, L2778, L4655, L4530, L5155, and L1030?

    1 answer
    1. The supplier does not provide the molecular weight or a molecular weight range for any of the latex beads. Polystyrene has a linear formula of [CH2CH(C6H5)]n. There are no exact values for the molecular weight available, although some internet sources may state a range of 100,000 to 400,000 amu. The polystyrene can be unmodified or surface modified. The dye is encapsulated inside the surface functionalized (amine or carboxylic) PS beads, which are well dispersed in the cationic surfactant assisted solution. The dye is not strongly bonded, and the PS may have a porous structure, so the dye can come out when changing to an organic solvent.

      Helpful?

  2. Hi, can you please provide me some information about the density of amines loaded on the surface of this particles?

    1 answer
    1. The amine content is not specifically quantified on a lot-to-lot basis. Historical data indicate a total parking area of 30 to 300 angstroms squared per charge group. Unfortunately, no further information is available.

      Helpful?

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