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76327

Sigma-Aldrich

Micro particles based on melamine resin, rhodamine B-marked

size: 5 μm

Synonym(s):

Melamine-formaldehyde resin

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About This Item

MDL number:
UNSPSC Code:
12352116
NACRES:
NA.21
Pricing and availability is not currently available.

Quality Level

form

aqueous suspension

concentration

2.5% (solids)

particle size

5 μm std dev <0.15 μm, coeff var <3%

fluorescence

λex 540 nm; λem 584

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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

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

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Articles

Fluorescently labeled microparticles are useful as standards in flow cytometry, confocal laser scanning microscopy, and with light scattering instruments..

Questions

1–2 of 2 Questions  
  1. What is the Department of Transportation shipping information for this product?

    1 answer
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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  2. Can products be covalently attached through binding to the Rhodamine dye on the bead for the Micro particles based on melamine resin, rhodamine B marked?

    1 answer
    1. For Mico Particles based on Melamine Resin, Rhodamine B-marked, fluorescent, the fluorophores are not coated on the particles’ surfaces but are incorporated throughout their interiors. Plus, the amount of applied dye is below 0.2 wt.-%, or so. Hence, the approach of coupling anything via dye-borne functional groups is not very promising. Nitrogen centers of the polymer itself are not accessible for covalent bonds either.For coupling reactions whatsoever, it is recommended to use the micro Particles with functional groups such as 83088 and 88893, Micro particles based on melamine resin, carboxylate modified, rhodamine B-marked.

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