"Do you have any suggestion for accreditation bodies for Lab to accredited ISO 17025?
I am unable to make suggestions on such a matter. Certain countries have a single accreditation body, and laboratories do not have a choice. If you do have a choice, you may choose to speak with laboratories that have been through the process; and form your own opinion as who to choose.
What is the difference between accreditation bodies and certification bodies?
Certification bodies assess and certify organizations or people, whereas accreditation bodies assess and accredit laboratories. Accreditation is not compulsory for certification bodies, however, all accreditation bodies themselves accredited, mandated by national legislation. Depending on the scope of work, the standard to which accreditation and certification bodies are accredited differ. ISO 17011 is the Standard for Accreditation Bodies, whereas ISO 17024 is the standard for Conformity assessment - General requirements for bodies operating certification of persons.
The following article may be of interest, providing a good explanation and further information