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I read an article (http://www.gizmodo.jp/2013/10/post_13267.html, in case anyone is interested), and it got me thinking how a Japanese person would read this passage:

ここの水は水素イオン指数pH 9~10.5。

Do they pronounce the pH? And what about the numbers? Is it just something like きゅう、じゅう てん ご ぐらい?Or is there some kind of suffix?

Thanks!

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1 Answer 1

up vote 5 down vote accepted

According to Wikipedia, there are three pronunciations of pH:

  1. An older pronunciation from German, ペーハー.
  2. A newer pronunciation from English, ピーエイチ.
  3. A variant on the latter, ピーエッチ.

It seems like these are all still in use, but the long-term trend is toward the English-derived reading. According to Wikipedia, ピーエイチ was decided upon as a standard reading by JIS in 1957, and this was revised to ピーエッチ by JIS in 1984, so you may wish to follow the standard and read it ピーエッチ.

As for the numbers, we have a question about how to read a range of numbers already. In short, I think you can read the numbers like you normally would, pronouncing the between them as から, or very formally as ないし. I don't think you need to add a suffix.

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Thanks for pointing out the Range of numbers question. I missed it. –  Tim Oct 5 '13 at 0:47
    
Thanks! I actually just thought of an idea. I tried searching on youtube if there are any japanese chemistry teachers and actually found a video about ph. The teacher uses the english pronunciation ^^ youtube.com/watch?v=EApkgSl_BsE –  Rodrigo Pará Oct 5 '13 at 2:08

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