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  • 30787 - Deoxyribonuclease Test Agar

30787 Millipore

Deoxyribonuclease Test Agar

for microbiology

  •  NACRES NA.85



Related Categories A - M, All Food Control Media (alphabetical), All Solid Media/Agars, 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   agar, 15 g/L
  deoxyribonucleic acid, 2 g/L
  sodium chloride, 5 g/L
  tryptose, 20 g/L
application(s)   microbiological culture: suitable
  pathogen testing: suitable
final pH   7.3±0.2 (37 °C)
Featured Industry   Clinical Testing
Food and Beverages
suitability   nonselective and differential for Serratia spp.
  nonselective and differential for Staphylococcus spp.
  nonselective and differential for Streptococcus spp.


General description

Deoxyribonuclease Test Agar is recommended for the detection of deoxyribonuclease activity of bacteria and fungi, and especially for identification of pathogenic Staphylococci.
Bacteria are streaked on to the surface of the agar medium and incubated. The growth on the surface of the agar is then flooded with 1N hydrochloric acid. Polymerised DNA precipitates in the presence of 1N HCl and makes the medium opaque. If the organisms produce DNase enzymes, in sufficient quantity to hydrolyse the DNA, then clear zones are seen around the colonies.


for the detection of deoxyribonuclease activity of bacteria and fungi, and especially for identification of pathogenic Staphylococci

Safety & Documentation

Safety Information

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


Certificate of Analysis (COA)

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Protocols & Articles


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Peer-Reviewed Papers


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