

M5003-200 by Zymo Research is the ZR 1 kb DNA Marker (200 µg / 400 µL), a 10-band ladder spanning 0.5–10 kb with an enhanced 3 kb reference band, at 500 µg/mL in Tris-EDTA buffer — loaded at 1 µg per lane for sizing PCR products, restriction digests, and linearized plasmids.