Absolute Mag™ Alkyne Magnetic Particles, 1 μm, Low Density 1 μm alkyne magnetic particles, supplied at 1% solids. There are alkyne groups with low density (10 μmol/g) on the surface of particles. The compounds or proteins with azide groups can be immobilized on the particles easily by click chemistry. The diameter is nominal mean diameter, and the Lot-specific value is reported on COA.