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70194 Millipore

Tryptone Water

for microbiology

  •  NACRES NA.74

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Properties

Related Categories All Food Control Media (alphabetical), All Liquid Media/Broths, Bacteria (General Media), Biochemical Identification Media by Test, Biochemical Identification Media, A to Z,
Quality Level   100
grade   for microbiology
form   powder
shelf life   limited shelf life, expiry date on the label
composition   sodium chloride, 5.0 g/L
  tryptone (tryptic hydrolysate of casein), 10.0 g/L
application(s)   microbiological culture: suitable
  sample preparation: suitable
final pH   7.5±0.2 (25 °C)
Featured Industry   Environmental
Food and Beverages
suitability   nonselective for Enterobacter spp.
  nonselective for Escherichia coli
  nonselective for Proteus spp.
  nonselective for Salmonella spp.
  nonselective for Staphylococcus spp.
  nonselective for bacteria (General Media)
  nonselective for coliforms
  nonselective for enterobacteriaceae

Description

Application

A liquid medium for the detection of indole-forming microorganisms due to its high content of tryptophan, it is more reliable than peptone water for this purpose.

Tryptone water is primarily used for the cultivation and maintenance of fastidious aerobic and facultative microorganisms such as Escherichia coli and Pseudomonas species.

Other Notes

Direct plating method for enumeration of E. coli in water

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 3
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles

Articles

Microbiology Introduction

An initial aim of all microbiologists is the reproducible growth of their microbial cultures, no matter whether the microorganisms are of natural origin or have been genetically engineered by man. Re...
Keywords: Absorption, Aerobic, Anaerobic, Antibiotics, Antimicrobials, Buffers, Culture media, Diffusion, Environmental, Filtration, Genetic, Growth factors, Metabolism, Phase transitions, Precipitation, Reductions, Respiration, Sample preparations, Vitamins

Microbiology Theory: Media Preparation

Microorganisms need nutrients, a source of energy and certain environmental conditions in order to grow and reproduce. In the natural environment, microbes have adapted to the habitats most suitable ...
Keywords: Culture media, Digestions, Environmental, Filtration, Growth factors, Indicators, Microbiology, Phase transitions, Precipitation, Vitamins

Related Content

Biomonitoring

From our library of Related Content, Sigma-Aldrich presents Biomonitoring
Keywords: Microbiology

Peer-Reviewed Papers
15

References

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