A pH meter is a laboratory instrument for scientific use, which measures the activity of the hydrogen ion in aqueous solutions, indicating its degree of acidity or alkalinity expressed as pH, is used in laboratories and in multiple other fields or areas; a pH measurement can be obtained using pH indicators or tapes, or meters such as pH meters, portable meters or pH electrodes.
This pH meter instrument makes a measurement of the pH by a potentiometric method, based on the fact that between two solutions with different H + a potential difference is established, which determines when the two solutions come into contact a flow of electric current occurs, in practice the pH measurement is relative, since the pH of a sample is compared with that of a known pH standard solution.
Types of KALSTEIN pH meters
∙ Industrial pH controller: calibration from 1 to 3 points, outputs from 4 to 20 mA and is indicated to monitor the pH in the chemical, environmental protection and food industries.
∙ Pocket pH meter: it is a high-precision instrument, calibration from 1 to 3 points, configuration menu contains 5 options and is suitable for measuring the pH of general water samples, accuracy 0.01 pH.
∙ Portable pH/ion meter: calibration from 2 to 5 points, selectable ion concentration units and is required to measure pH, mV and ion concentration, accuracy 0.5% FS. (there are a variety of models)
∙ Desktop pH meter: it is equipped with a 7-inch TFT screen, 1 to 5 point calibration with automatic recognition for USA, NIST and DIN buffers; temperature coefficient of the solution compensates for pure water samples and refers to the pH at 25° C. (variety of models).
What these pH meters are used for
✔ Control the parameters of acidity in the water to favor the absorption of nutrients in the plants.
✔ They mainly measure the pH levels of substances, swimming pool, aquariums.
Some measure ion concentration.
✔ According to the model they measure in addition to pH, they measure the temperature.
✔ They measure oxidation levels.
✔ Concentration of bacteria and contamination of wastewater.
✔ Measure the acidity or alkalinity levels of a sample.
✔ Determine the pH of a substance quite accurately.
✔ Water hardness.
✔ Verifies the quality of the food, reviewing the established standard levels.
How a common pH meter should be used
Depending on the model to be used and the calibration that must be carried out, the difficulty or ease of using the equipment will depend, however, in general you only have to follow one simple step to put your meter into practice and obtain your measurements, in addition to following the manufacturer’s instructions:
- Turn on the pH meter.
- Wait a period of time about half an hour, or as indicated by the manufacturer.
- Remove the electrode from storage.
- Pass the electrode through distilled water.
- Press the calibrate button and wait for it to prompt you to press again.
- Immerse in a pH 4 solution
- Then immerse again in distilled water.
- You can now proceed to measure your sample.
Indispensable parts that a pH meter must possess
✔ pH electrode: has a very thin pH selective glass membrane.
✔ Temperature compensation elements: temperature can cause incorrect measurement so it is essential that your meter has this aspect, to control the temperature.
✔ pH meter: contains circuits, displays, meters, calibration, vary according to the model.
Each model of pH meter, has different settings, for the acquisition of these KALSTEIN meters, you can do it through our online purchase channels that are very easy and viable, in the following link: HERE reminding them that we are high-level manufacturers, with great demand for buying and selling worldwide, in addition to offering the best specialists to provide you with the necessary advice, Our Kalstein Laboratory Equipment Company offers you great advantages of guarantee and commitment, ensuring a team with superior technology and high performance.