a) Describe and comment on typical sterilising techniques, including their applications, advantages, and disadvantages.

[answerhappygod]

a) Describe and comment on typical sterilising techniques,
including their applications, advantages, and disadvantages.
b) Determine which sterilising technique is optimal for
simultaneously sterilising and dehydrogenating a Pyrex® bottle.
c) 1025 spores of U. Hertfordinum were found in a beaker.
How long will it take to lower the spore count to 100 after
sterilising at 251°C?
[ U. Hertfordinum has a D of 0.999 min at 221°C, and a Z
value of 5°C ]
**Explain your logic and put out all of the steps of your
calculation as part of your response**