For CSIR NET, the student's are eligible in there BSc as well as MSc courses. But if you see from the purpose of applicability, CSIR NET is for PhD course which requires a MSc degree. So it would be useful for a student when you are in MSc as after MSc you can join different institutes for PhD course. So obviously, you should prepare well and apply for the CSIR NET in the coming year while you will be in your MSc.

For detailed information about CSIR NET, click the link below:

https://competition.careers360.com/exams/csir-ugc-net#:~:text=The%20eligibility%20of%20CSIR%20NET%20is%20determined%20on%20the%20following%3A&text=Educational%20Qualifications%20%E2%80%93%20Candidates%20must%20hold,ST%20%2D%205%20years

To know more about the career in Microbiology you can visit the link below:

https://www.careers360.com/courses/microbiology-course

I hope this helps. Have a great eve!