what is the effect and rationale when three milliliters instead of 1 mL was placed in the Petri dish in pour-plate method?
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what is the effect and rationale when three milliliters instead of 1 mL was placed in the Petri dish in pour-plate method?
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- what is the is the dilution factor when you add 2 mL ssample of 8 mL diluent?How would you make two-fold serial dilutions such that the last tube is a 1:32 dilution of the original, concentrated material? Assume that you need to have at least 500 µl of each dilution, and you should be able to perform the dilutions in microfuge tubes with a maximum capacity of 1.5 ml.Why Purified synthetic alcohol is preferred for level vial?
- In performing the Kirby-Bauer procedure in a clinical laboratory setting, why must the agar be a certain depth? Why must the absorbance of the inoculum be standardized?Why do the results for the confirmed test represent faecal coliform in the analysis of water using the MPN procedure?The physician has ordered 500,00 units of IV Pfizerpen every 4 hours. How much diluent will you add for a concentration of 500,000 units/mL? How many milliliters will you administer?
- Which is the better reagent for the clinical test between Fehling's solution and Benedict's solution? Explain briefly the answerWhen conducting a flame test for sodium iodide, is the result positive or negative?After performing a plate and liquid lysate, it was found that the plate lysate achieved the common titre range of 1010-1011 pfu/ml whereas the liquid lysate achieved a range of 108 PFU/mL; what is the reason for the lower titre in different methodologies? How can we troubleshoot this issue in the future?