TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PH PROBE [4 records]

Record 1 2011-09-12

English

Subject field(s)
  • Terra Cotta
  • Equipment (Chemistry)
OBS

Term(s) taken from a Canadian laboratory-equipment company’s catalogue.

French

Domaine(s)
  • Terres cuites
  • Équipement (Chimie)
OBS

Terme(s) tiré(s) du catalogue d'une compagnie canadienne d'équipement de laboratoire.

Spanish

Save record 1

Record 2 2008-03-27

English

Subject field(s)
  • Metrology and Units of Measure
  • Analytical Chemistry
  • Environmental Studies and Analyses
Universal entry(ies)
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.

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.

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.

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.

PHR

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

French

Domaine(s)
  • Unités de mesure et métrologie
  • Chimie analytique
  • Études et analyses environnementales
Entrée(s) universelle(s)
DEF

Indice exprimant l'activité (ou la concentration) de l'ion hydrogène dans une solution à l'aide d'une échelle logarithmique.

OBS

Si le pH est inférieur à 7, la solution est acide; s'il est supérieur, elle est alcaline.

PHR

valeur de pH.

Spanish

Campo(s) temático(s)
  • Metrología y unidades de medida
  • Química analítica
  • Estudios y análisis del medio ambiente
Entrada(s) universal(es)
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.

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.

PHR

valor de pH.

Save record 2

Record 3 2003-05-29

English

Subject field(s)
  • Bioengineering
CONT

Specimens to be imaged with a CSLM [confocal scanning laser microscope] must be labelled with a fluorescent probe. Fluorescent probes are available for a wide range of biological preparations permitting the use of the CSLM to image such things as macromolecular structures(such as proteins, lipids, carbohydrates and nucleic acids) and physiological ions(such as Calcium and pH). The CSLM can be to image static fluorescent specimens, or to provide dynamic quantitative imaging and measurements.

French

Domaine(s)
  • Technique biologique
CONT

Le MCBL [microscope confocal à balayage laser] peut être utilisé pour des mesures dynamiques. Une application intéressante concerne les mesures de concentration intracellulaires en calcium via des sondes fluorescentes.

Spanish

Save record 3

Record 4 1994-09-28

English

Subject field(s)
  • Chemistry
  • Atomic Physics
  • Medical and Surgical Equipment

French

Domaine(s)
  • Chimie
  • Physique atomique
  • Équipement médico-chirurgical

Spanish

Save record 4

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