PRB | Phenol Red Broth Test | Microbiology Lab

The phenol red broth test reflects a metabolic characteristic of your bacteria, but it isn't the most specific as the decarboxylation lab ( • Amino Acid Decarboxyla... ) which can confirm your results here while informing you of which AA the bacteria used.
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[@lilacunderground]

pink - peptone is broken down into ammonia
yellow - sugar is broken down producing acid product ex) lactose -> lactic acid
confirmation test - uninoculated control
inner tube - durham tube