Back to the kitchen: food-grade agar is a low-cost alternative to bacteriological agar.

@article{Petrovski2012BackTT,
  title={Back to the kitchen: food-grade agar is a low-cost alternative to bacteriological agar.},
  author={Steve Petrovski and Daniel Tillett},
  journal={Analytical biochemistry},
  year={2012},
  volume={429 2},
  pages={140-1}
}
Food-grade agar can be used as a low-cost substitute for bacteriological agar in the preparation of solid microbial media. No difference was observed in the colony morphology, growth rate, or viability of bacteria grown on solid media prepared using food-grade agar as compared with using bacteriological-grade agar. This simple tip can reduce the cost of the most common solid media by 80% or more. 

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