PH-indikator: Forskelle mellem versioner
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[[ar:مؤشر الرقم الهيدروجيني]]
[[de:Indikator (Chemie)#S.C3.A4ure-Base-Indikatoren]]
[[en:pH indicator]]
[[et:Happesusindikaator]]
[[es:Indicador de pH]]
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