SUMMARY: For viable counting, 0·1 ml. volumes of bacterial suspension were incorporated in 1·5–2 ml. nutrient agar, which after mixing was allowed to solidify in an almost horizontal test-tube so as to produce a 3–4 in. agar strip. After incubation in the vertical position, the counts of the strips gave estimates of a bacterial population which did not differ significantly from that obtained from plates inoculated with 1 ml. quantities.


Article metrics loading...

Loading full text...

Full text loading...



  1. Crone P.B. 1948; The counting of surface colonies of bacteria.. J. Hyg., Comb. 46:426
    [Google Scholar]
  2. Esmarch E. 1886; Ueber eine Modification des Koch’schen Plattenverfahrens zur Isolirung und zum quantitativen Nachweis von Mikroorganismen.. Z. Hyg 1:293
    [Google Scholar]
  3. Miles A.A., Misra S.S. 1938; The estimation of the bactericidal power of the blood.. J. Hyg., Camb. 38:732
    [Google Scholar]
  4. Snyder T.L. 1947; The relative errors of bacteriological plate counting methods.. J. Bact 54:641
    [Google Scholar]

Data & Media loading...

Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error