Most laboratories consider less than 7.20 and greater than 7.60 the critical values for pH.

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Maha F. Smaism Popular answer

because the upper and lower this value that mean death

Maha F. Smaism

Moaed E. Algazally

thanks Maha Fahdil Mohammed for a nice comments and excellent answer.

Ghassan Fadhil Smaisim

Is there any chance to make some of laboratories has a perfect range of PH?

Thanks Dr. Moaed Al-gazally for nice comments