From: | ajennings@unmc.edu |
http://www.sigma-aldrich.com/sigma/proddata/p0879.htm product page for Poly-L-Lysine for the powder we actually use the Poly-L-Lysine solution (s2171) from Poly Scientific (US 800-645-5825)and are very happy with them doing the QC andQA for us and it works wonderfully