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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Logarithm of the reciprocal of the hydrogen-ion concentration in a solution (-log₁₀[H⁺]) used as a measure of the degree of acidity or alkalinity of this solution.  3, record 1, English, - pH

Record number: 1, Textual support number: 1 CONT

Roughly, pH can be divided into the following ranges: pH 0-2: Strongly acidic; pH 3-5: Weakly acidic; pH 6-8: Neutral; pH 9-11: Weakly basic; pH 12-14: Strongly basic. Under the Controlled Products Regulations, materials with pH values of 0-2 or 11.5-14 may be classified corrosive.  4, record 1, English, - pH

Record number: 1, Textual support number: 1 OBS

A pH of 7 is regarded as neutral (pure water), a pH less than 7 corresponds to an acid solution and a pH greater than 7 corresponds to an alkaline solution.  3, record 1, English, - pH

Record number: 1, Textual support number: 2 OBS

It should be noted that the pH scale is a logarithmic scale; a substance with a pH of 4 is more than twice as acid as a substance with a pH of 5. Similarly, a substance with a pH of 9 is much more than twice as alkaline as a substance with a pH of 8.  5, record 1, English, - pH

Record number: 1, Textual support number: 1 PHR

pH buffer solution, control, decline, diagram, electrode, gradient, indicator, limit, measurement, meter, modifier, probe, range, scale, unit, value.  6, record 1, English, - pH

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Indice exprimant l'activité (ou la concentration) de l'ion hydrogène dans une solution à l'aide d'une échelle logarithmique.  5, record 1, French, - pH

Record number: 1, Textual support number: 1 OBS

Si le pH est inférieur à 7, la solution est acide; s'il est supérieur, elle est alcaline.  5, record 1, French, - pH

Record number: 1, Textual support number: 1 PHR

valeur de pH.  6, record 1, French, - pH

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Cologaritmo de la concentración de iones hidrógeno en una solución (-log₁₀[H⁺]) utilizado como medida del grado de acidez o alcalinidad de esta solución.  3, record 1, Spanish, - pH

Record number: 1, Textual support number: 1 OBS

Un pH de 7 se considera neutro (agua pura), un pH inferior a 7 corresponde a una solución ácida y un pH superior a 7 a una solución alcalina.  3, record 1, Spanish, - pH

Record number: 1, Textual support number: 1 PHR

valor de pH.  4, record 1, Spanish, - pH

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Usually, the population is practically wiped out by failing recruitment before the pH reaches levels low enough to kill bigger fish.... Experiments... indicate that for normal hatching and fry development there is a lower pH limit lying between pH 5. 0 and 5. 5 for salmon, between 4. 5 and 5. 0 for sea trout and of about pH 4. 5 for brown trout.  1, record 2, English, - pH%20limit

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Il existe une législation aux termes de laquelle un déversement doit rester dans certaines limites de température, de pH, etc., et ne doit contenir aucune substance dangereuse pour les égoutiers; dès lors, plusieurs industries doivent traiter leurs effluents avant tout rejet dans le réseau public.  2, record 2, French, - limite%20de%20pH

Record number: 2, Textual support number: 1 OBS

Les processus biochimiques qui se déroulent dans les sols dépendent souvent de l'activité des ions H+ : d'où l'importance du pH en agriculture (amélioration du rendement des cultures quand le pH est compris entre certaines limites).  3, record 2, French, - limite%20de%20pH

Record 2,  Textual support,  Spanish