How crucial could the quality of agar be for growth of bacteria (Arcobacter in particular)?

05 May 2013 0 4K Report

I was growing my Arcobacter happily using the recipe for Vandamme media (broth and agar). Then suddenly I had either poor growth or not growth in VD agar. All the ingredients were the same except the agar which I purchased a cheaper one. Could this be reason?

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