At this time, we are unable to offer Transfection-Ready DNA in custom amounts or concentrations. Transfection-Ready DNA is currently offered in two amounts — 50 µg and 100 µg. Multiple units of either 50 µg or 100 µg preps can be ordered using the dropdown menu on the plasmid page. All Transfection-Ready DNA is provided as liquid DNA in Tris buffer at a concentration of 1.0 µg/µL ± 2.5%.
If custom amounts or concentrations of DNA would help your work, please let us know at help@addgene.org. We cannot guarantee that we will adopt a particular suggestion, but your feedback helps inform future services.