This is one of the large group of media, affectionately known as ‘Peptone Water Sugars’, that are generally used in the screening and/or identification of organisms particularly the enterobacteriacae. A positive fermentation of the substrate is clearly indicated by the medium turning pink due to the inclusion Andrade’s Indicator.
BM0860 – Peptone Water with Lactose (Andrade’s)
|Shelf Life (days)|
|Storage Temp (°C)|
|Salmonella typhimurium||NCTC 12023||No change|
|Escherichia coli||NCTC 12241||Medium turns pink|