For covalent attachment of a ligand to a microparticle, Bangs Bead Coupling Buffers are available at a variety of pHs (4.5 to 9.0). They function as wash buffers in addition to coupling buffers for plain, dyed, or functionalized polymer microspheres.nFor microparticle storage, we offer the Bangs Bead Storage Buffer at pH 7.4 or 8.5 that includes stabilizers and antimicrobial agents. Our Bead Solution is a ready-to-use aqueous suspending solution containing an antimicrobial agent for the dilution and/or storage of your uncoated plain, dyed, or functionalized polymer microspheres (both carboxylated or aminated).