Salt content (measured as sodium chloride) in electrically desalted crude
oil comes down to a level of about __________ ptb (pounds per thousand
barrel).
(A) 0.03
(B) 3
(C) 35
(D) 70
oil comes down to a level of about __________ ptb (pounds per thousand
barrel).
(A) 0.03
(B) 3
(C) 35
(D) 70