Multiple Choice
Which of the following is required when attaching a gauge set to check system pressures in a laboratory setting?
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4. BONUS: Lab Techniques and Procedures
Laboratory Materials
Multiple Choice
Which of the following is the best method to sterilize heat-labile solutions?
A
Filtration using a membrane filter
B
Dry heat sterilization
C
Autoclaving at 121 °C
D
Boiling for 30 minutes
Verified step by step guidance1
Understand the term 'heat-labile solutions': these are solutions containing substances that can be damaged or denatured by high temperatures.
Review common sterilization methods: dry heat sterilization, autoclaving (steam under pressure), boiling, and filtration.
Analyze each method's suitability for heat-labile solutions: dry heat, autoclaving, and boiling involve high temperatures that can degrade sensitive components.
Recognize that filtration using a membrane filter sterilizes by physically removing microorganisms without applying heat, making it ideal for heat-sensitive solutions.
Conclude that filtration using a membrane filter is the best method to sterilize heat-labile solutions because it avoids heat-induced damage while effectively removing contaminants.
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