Hello,

may i know What the name of your antibiotic?

anyway Its also depend on your medium. each medium have diverse shelf-life.

you can check this article Its very uselful

http://www.cabri.org/guidelines/micro-organisms/M203Ap1.html

We usually store LB(agar)+antibiotics for up to a month in the refrigerator (4C), never tested for stability though.

It depends on the antibiotics used and on the type of culture medium, either solid or liquid medium .Anyhow , you can store in cold room for up to 45 days.

Thank you very much for your answers. Wiwiek Harsonowati Yoram Gerchman Gamal Enan