Comment 27: l. 414, Delete “(“before “C. pH”. ll. 416 and 432 , Add “C.” before “pH=” . ll. 417 and 432 , “30.0” instead of “3.0” ?
English language should be revised thoroughly. There are inconsistencies in singular-plural concordance between subject and verb as well as noun and pronoun. Verb tenses should be checked. Articles (mostly definite, but also indefinite) are often missing and sometimes superfluous.