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You are here:Home » Culture Media » Media-Microbiological » Peptone Water (Powder)

Peptone Water (Powder)


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Peptone Water is a broth medium used for the detection of indole and carbohydrate fermentation patterns of non-fastidious organisms. Peptone Water is a minimal growth medium which is used for determining carbohydrate fermentation capabilities.
Catalog #P3505-50
Recommended DilutionsCarbohydrate Fermentation Study: 1% final carbohydrate concentration with phenol red (0.018g/L) indicator and Durham tube. After incubation a yellow broth with or without gas bubbles indicates a positive fermentation reaction.
Indole Test: Place an indole test strip 10mm above a 24-48 hr. broth culture. Reincubate for 5-30 minutes. A violet red color on the test strip indicates a positive reaction.
Storage and StabilityStore unopened medium at 2-30°C. Store opened medium container in a low humidity environment at 2-30°C. Store liquid medium at 4°C. The powder medium should be discarded if it is not free flowing or if the color has changed from the original light beige color.
AppearanceLight beige, homogeneous, free flowing powder
SolubilityGold to amber, clear to turbid to clear..
pH7.2 ± 0.2
Microbiological AnalysisEscherichia coli (ATCC 25922): Growth
Salmonella typhimurium (ATCC 14028)Growth
Staphylococcus aureus (ATCC 25923)Growth
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Alternate namesPowder

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