
P2003-4 by Zymo Research is the His-Wash Buffer (50 mL) for His-tagged protein purification — 50 mM sodium phosphate pH 7.7, 300 mM NaCl, 50 mM imidazole, 0.03% Triton X-100 — designed to remove weakly bound contaminants from nickel-agarose resin in the His-Spin Protein Miniprep workflow (kits P2001 and P2002). Made in USA.