Zymo Research M5004-50 ZR 50bp DNA Marker (Ready-to-Load), Zymo Research, (50µg/600µl)/Unit - 11-716 | Genesee Scientific Zymo Research M5004-50 ZR 50bp DNA Marker (Ready-to-Load), Zymo Research, (50µg/600µl)/Unit - 11-716 | Genesee Scientific