Jan 11, 2018 - What is the major just disadvantage of microbial counts for performed. What is the advantages and disadvantages to the serial dilution agar. Serial dilution procedure only counts viable cells while other methods may count. What is the advantages and disadvantages to the serial dilution agar plate. Direct Improvement With Direct Dilution. The serial dilution technique 1 using pipets is a. Direct dilution provides a number of advantages over serial. LAB REPORT OF MICROBIOLOGY.

Here's a paragraph about the molds that may help to infer the reason of the advantages during observation of mold colonies: 'Because the structural components of molds are very delicate, even simple handling with an inoculating loop may result in mechanical disruption of their components.The followi ng culture technique es used to to avoid this disruption. After culturing, molds spores are deposited in the surface of the agar and incubated in a moist chamber at room temperature.

Direct microscopic observation is then possible without fear of disruption or damage to the anatomical components'. It may be more beneficial in this aspect: allowing a full and healthy growth of the mold, that is, with its complete structure, then to be able to proceed to look through the microscope maybe it form, type of spore,sporangia or mycelium. In short, ensure that the mold to grow properly. Maybe it's not what you exactly were looking for but it could help you! Second Year of Microbiology bachelor's degree (University Of Puerto Rico in Arecibo) Paragraph taken of Capuccino/Sherman Microbiology.

A laboratory Manual.Eight Edition. The following are some advantages of an agar plate verses a slant tube: 1.

Surface area- An agar plate has a much larger surface area: a. Easier to isolate individual colonies using the streak-plate method. Evaluate the colony shape, margin and elevation. Can grow a larger number of ce lls. Growth- An agar plate allows you to quantify the number of colonies on an agar plate, provided it is within the 30-300 range. Whereas the slant tube cannot quantify growth but only describes growth as none, slight, moderate, or large. Sanepidrezhim procedurnogo kabineta.

The primary aim of this study was to evaluate the level of agreement of the E-test for in vitro antimicrobial susceptibility testing of Campylobacter coli using the agar dilution technique, which is the approved method. A convenience sample of 80 Ontario swine farms was chosen for this study; each farm was visited from January to June 2004. A total of 233 isolates of C. Coli were tested for susceptibility to 10 antimicrobials by agar dilution and the E-test. Performance of the tests was evaluated using 7 quality control strains: Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 29213, Campylobacter jejuni ATCC 33560, and Campylobacter coli ATCC 33559 for the E-test and E. Coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, and C. Jejuni ATCC 33560 for the agar dilution test.

Weighted Cohen’s kappa and prevalence-adjusted bias-adjusted kappa (PABAK) tests were used for statistical analysis. The E-test and agar dilution test results had a strong agreement when resistance to streptomycin and tetracycline were evaluated (weighted kappa: 0.68 and 0.66, respectively). However, marked disagreement was detected when testing susceptibility to nalidixic acid and ampicillin (0.15 and 0.22, respectively).

Almost perfect agreement was detected by PABAK when testing susceptibility to gentamicin (0.99). Agreement was found to be moderate for ciprofloxacin, azithromycin, clindamycin, erythromycin, and chloramphenicol.