I have a question about the storage of biobeads. I am worried about the deteriorate of biobeads which may affect the proteoliposome function. I usually store them in buffer at 4 degree. I read some literature that prolonged storage over one week will make biobeads absorptivity decreases drastically. I have to prepare biobeads every time before I use them, which is time consuming in this case. How do you store biobeads? Thanks.
All Bio-Beads SM adsorbents are stable for 5 years when stored at room temperature in the unopened container. Bio-Beads SM adsorbents, for adsorbing organics
from aqueous solutions, are neutral, macroporous polymeric Analytical Grade adsorbents of high surface area, which are intended for laboratory use only. The
adsorbent is composed of a large number of highly crosslinked microspheres. This macroreticular structure gives it high surface area and uniform pore sizes. BioBeads
adsorbents can be used with a variety of solvents, including alcohols, petroleum ether, diethyl ether, hexane, and solvent mixtures, as well as with aqueous media. They have excellent physical stability and will withstand temperatures up to 250 °C and pressures to 1,200 psi. Biotechnology Grade Bio-Beads SM adsorbents are specifically certified to contain less than 100 microorganisms per gram. Buffer A1: 1 M ... SM-2 BioBeads, 20–50 mesh (BioRad, Hercules, CA).SM2 BioBeads should be washed freshly for each reconstitution. It is possible to keep them in buffer at 4°C for a few days, but prolonged storage of washed beads leads to poor performance. Bio-Beads can be stored frozen in 18MΩ nanopure water at -20 °C.
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