Choose your answer before opening the explanation. This is a learning exercise, not a competency assessment.
NHB's cook out for pathogens in spent compost is:
- 70 C held for 12 hours
- 45 C for one hour
- 100 C for 10 minutes
- No heating needed
See the answer and why
70 C held for 12 hours 12 hours for pathogens, 2 to 3 hours for insects.

