Unfortunately, the bead count for this product has not been determined. The particle size is approximately 0.5 um and the solid content is approximately 2.5%. Please see the link below to review the full product specifications:
https://www.sigmaaldrich.com/specification-sheets/357/795/L3280-BULK________SIGMA____.pdf
L3280
Latex beads, carboxylate-modified polystyrene, fluorescent red
aqueous suspension, 0.5 μm mean particle size
Synonym(s):
Carboxylate Polystyrene Beads, Fluorescent Latex Beads
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1 ML
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€104.00
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form
aqueous suspension
composition
Solids, 2.5%
technique(s)
cell based assay: suitable
mean particle size
0.5 μm
fluorescence
λex ~575 nm; λem ~610 nm
application(s)
cell analysis
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Application
Carboxylate-modified polystyrene latex beads have been used to collect morphofunctional data about the immune systems of Carabus lefebvrei, a helicophagous Italian endemic ground beetle often used as an indicator of the habitat quality of the Apennines mountain forests. Carboxylate-modified polystyrene latex beads have also been used to inform comparative studies on immunity defense mechanisms of adults and larvae of the coleopteran Cetonischema aeruginosa and to investigate the phagocytic activity of cultured rat thyroid cells.
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
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How many latex beads (500 nm) are present in 1 mL solution?
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How many fluorescent beads (L3280) are in the 1 ml of the product?
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The bead count for this product is not a tested specification. As listed in the "Properties" section of the product detail page, the solids constitute 2.5% of the aqueous solution. This specification can also be viewed on the sample Certificate of Analysis: https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/L3280-BULKMKCS6365.pdf.
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