The phenolic compounds in public water supply should not be more than_______________?
(A) 0.1 ppm
(B) 0.01 ppm
(C) 0.001 ppm
(D) 0.0001 ppm
Share this... |
Facebook
|
Twitter
|
Linkedin
|
Whatsapp
|
Your email address will not be published. Required fields are marked *