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Absolute Mag™ Streptavidin Magnetic Dextran Nanoparticles, 130 nm(WHM-G084)

Datasheet Magnetic Beads Bioconjugation

Absolute Mag™ Streptavidin Magnetic Dextran Nanoparticles, 130 nm (# WHM-G084) are prepared by precipitation of iron oxide in the presence of dextran. These nanoparticles are designed with covalently bound streptavidin on the surface for binding of biotinylated molecules with a high affinity. These magnetic nanoparticles are cluster-typed shaped and can be separated in a high gradient magnetic field. Polydispersity index: < 0.25.

Application Notes
Contrast agents for Magnetic Resonance Imaging (MRI) and Magnetic Particle Imaging (MPI).
Polydispersity Index
< 0.25
Particle Size
130 nm
5 mg/mL
Storage Buffer
Suspension in PBS (0.02 % sodium azide).
Unit Size
2 mL
Number of Particles
6.3E+12 particles/mL
Surface Group Density
1.5 - 2.0 µg streptavidin/mg particles (ca. 10 molecules streptavidin per particle)
1.4 g/ccm
76 Am2/kg iron (H = 80 kA/m)
Saturation Magnetization
>87 Am2/kg iron (H> 800 kA/m)
Coercive Field Hc
0.5 kA/m
Stable in aqueous buffers pH> 4. Not stable in organic solvents, acidic solutions pH < 4.
Storage at 2 - 8 °C for 3 months.
Shelf Life
When stored as specified the product is stable for three months.

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