Microbiological Testing

**Total Coliform/E. coli:** Indicators of fecal contamination; requires aseptic sampling techniques (Title 22, CCR). * **Legionella Monitoring:** Analytics for cooling towers and large-scale hot water distribution systems. * **HPC (Heterotrophic Plate Count):** Measures the overall "microbial load" to check the effectiveness of water treatment units.

Questions

Which sterilization method relies on steam under pressure and is most commonly u…
When evaluating an autoclave's performance, which biological indicator is consid…
In the Colilert Quanti-Tray method viewed under a 365 nm UV lamp, what specifica…
Why must a drop of immersion oil be placed between the glass slide and the 100x …
During the Confirmed Phase of the Multiple-Tube Fermentation (MTF) technique for…
What is the maximum holding time and transport temperature for a drinking water …
In the Multiple-Tube Fermentation (MTF) technique for total coliform analysis, w…
Why are Total Coliform bacteria used as an "indicator organism" for drinking wat…
When using the Colilert (enzyme substrate) method, what does a sample that turns…
When using the streak plate technique for bacterial isolation, what is the prima…
In the presence-absence (P-A) coliform test, what volume of water sample is anal…
When counting colonies on an m-Endo agar plate after Membrane Filtration, which …
What is the required incubation temperature and time for the Total Coliform Memb…
A laboratory worker accidentally spills a broth culture of E. coli on the bencht…
According to Standard Methods, what is the standard pore size of the gridded mem…
Which of the following is considered a primary safety hazard when working with d…
Which of the following describes the definition of the Coliform group of bacteri…
What is the proper procedure for sterilizing glass pipettes and Petri dishes in …
When preparing a serial dilution (e.g., 1:10) of a highly contaminated wastewate…
In the Multiple-Tube Fermentation (MTF) technique, the Presumptive Phase utilize…