Zymo Research Plasmid Wash Buffer concentrate (add ethanol before use) for Zymo-Spin column wash in Zyppy and ZR Plasmid Miniprep kits. Four concentrate volumes: D4027-4-6 (6 mL), D4027-4-12 (12 mL), D4027-4-24 (24 mL), D4027-4-48 (48 mL).