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Discover LudwigThe phrase "a ph of" is not correct in standard written English and lacks clarity.
It may be an abbreviation or shorthand, but without context, it is not usable in formal writing.
Example: "The study measured a ph of 7.4 in the samples."
Alternatives: "a pH level of" or "a pH value of".
Exact(60)
A pH of 3.5 is ideal.
(The water of Earth's oceans, for comparison, has a pH of 8.2).
At a pH of about 7.8, many shelled organisms dissolve.
Immersion in a mild acidic solution, with a pH of 5.5, worked best.
"Most soils around here have a pH of 6.3 or so, and lavender likes a pH of 7 to 7.5," Mr. Wajda said, referring to the measure of alkalinity (7 is neutral).
Blueberries are fairly easygoing plants, but need soil with a pH of 4-5.5.
Perrier has a pH of around 5.5 – the other waters have high pHs.
On the other end of the scale, milk of magnesia has a pH of 10.0, whereas household ammonia has a pH of 11.9.
At the ocean's surface, seawater typically has a pH of about 8 to 8.3 pH units.
The developed sanitiser had a pH of 7.08 ± 0.08, and the commercial sanitiser had a pH of 3.77 ± 0.18.
He was surprised to find that the water was unusually acidic, a pH of around 4.5, but he did not know why and just filed away his notes.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com