Strain modifications for Medium 503b
3 distinct modifications were found.
Omit sodium perchlorate and supplement medium with 1.60 g/l NaNO3. Adjust the amount of Na-acetate to 0.80 g/l.
Omit solution E and acetate. Add 0.85 g/l NaNO3 to solution A and use 1.00 g/l pivalic acid as substrate.