English example sentences with "PH"

I have to work for my Ph. D. this summer.
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When investigating the pH (acidic, neutral, alkaline) of a liquid, don't soak the litmus paper completely in the liquid but just put the end of the paper in it.
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Phenolphthalein will turn fuchsia in the presence of a base with a pH of or above 10.0 and will remain colorless in the presence of a solution with a pH of or below 8.2.
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The pH scale is logarithmic.
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Ocean acidification refers to a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide from the atmosphere.
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A water sample is taken to learn about pH.
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The plant experiment, called Plant Habitat-02 (PH-02), is the first time NASA has grown radishes on the orbiting laboratory.
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It is the 8th of June of 2013. I am wishy-washy as to my conlang priorities. Do I want Esperanto and Lojban? Or, do I want Lojban first, then Esperanto? Do I need to add Interlingua next? I tend to think now that Lojban has first priority for me. Hidden away is still the Orange Dream, which, I think, would be something different from Vling and would be really super-duper. The Orange Dream would have a more quaint Romanization perhaps, with such things as 'qu' and 'ph'. The morphemes would be monosyllabic.
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Under normal conditions, the vagina is colonized primarily by lacto-bacilli, which produce hydrogen peroxide — or most of which produce hydrogen peroxide — that maintains an acidic pH in the vagina.
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The colour of some hydrangeas is determined by the pH value of the soil: the more acidic it is, the bluer the flowers are.
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Scientists wanted to see how these developing larvae were being affected by the increased acidity of the ocean water caused by excess carbon dioxide in the atmosphere. Whitman Miller — an environmental scientist and ecologist with the Smithsonian research center — says oceans normally absorb about half of the carbon dioxide that's produced by living creatures. But when excess CO₂ is pumped into the atmosphere and dissolves into seawater, that contributes to an acidification, or a lowering of the pH of the oceans. A byproduct of that process — carbonic acid — rapidly converts to carbonate and bicarbonate ions, which Miller says are corrosive to the calcium carbonate shells of oysters and other marine species.
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