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Oven sterilization at 121˚C was performed on glassware for 15 minutes only.
Effect:
Rationale:
Step by step
Solved in 2 steps
- Identify the method of sterilization/ chemical agent described At 15psi, the temperature reaches 121 degree Celsius requiring only 15 to 20 minutes to sterilize the material. The material to be sterilized is exposed to live steam for 30 minutes for 3 consecutive days.Other than the application of heat, name other methods of sterilization. Define the methods and give examples of materials sterilized in each method.Loop with bacterial inoculum was subjected to flame sterilization prior to streaking on agar plate. Effect: Rationale:
- You are given reference temperature 121 °C, Z value 10 °C, F0 15 min for killing Clostridium botulinum in commercial sterilization. Calculate F value when sterilized at 131 °C in canning processing.The outer surface of the product container was not disinfected. effect: rationale:Disinfectants and Sterilization Procedures Complete the table by putting (+) for growth of microorganisms or (–) absence of growth of microorganisms. Disinfectant Concentration Growth after time of exposure (minutes) Control 5 minutes 10 minutes 15 minutes Sodium hypochlorite 5% Sodium hypochlorite 0.05% Alcohol 70% Alcohol 40% Iodophor (Betadine) 10% solution Mouthwash Cetylpyridinium Chloride - 0.075% Sodium Fluoride - 0.05%
- Alternative name for Moist-heat sterilization Select one: Oven sterilization Autoclaving Ionizing radiationFor preparation of a smear on a slide, what is the purpose of heat fixation? What problems can arise when the slide is heated in a flame?Match the description to the correct medium This medium is enrichment for fastidious [Choose ] bacterial pathogens and differential based on hemolysis [Choose ] This medium is selective based on Tryptic Soy Agar, TSA salt/sodium chloride tolerance at 7.5 % Sabouraud Dextrose Agar, "Sab" agar weight/volume and differential based on mannitol fermentation Mannitol Salt Agar, "MSA" MacConkey Agar, "Mac" agar This medium is selective based on the ability to grow in bile salts and crystal violet and is EMB Eosin Methylene Blue Agar differetial based on lactose fermentation Blood Agar, "BA" this medium is all purpose and can grow a [Choose ] wide range of bacteria and fungi
- In sterilization, which among the supplies, instruments, glassware, etc. under the list of materials can be sterilized using either or both equipment below? List them down under the category: a) For “autoclaving” only, B) For Dry heat oven sterilization ,And C) Can be sterilized with either. Materials: 200-ml Erlenmeyer flask Stove 500-ml Erlenmeyer flask Autoclave 10-mL graduated cylinder Analytical balance 100-ml graduated cylinder pH meter Spatula Stirring rod 100-mL beaker Test tubes Distilled water Petri dish Stirring rod Alcohol lamp Glass dropperList 5 other methods of sterilization and describe the principle/s and when each method is used. What are the requirements to support microbial growth?What will pose an ethical issue in these procedures are performed - sterilization?