pH Meters

A pH meter or pH meter is a scientific instrument that measures the activity of the hydrogen ion in aqueous solutions, indicating its degree of acidity or alkalinity expressed as pH. The pH meter measures the difference in electrical potential between a pH electrode and a reference electro...

A pH meter or pH meter is a scientific instrument that measures the activity of the hydrogen ion in aqueous solutions, indicating its degree of acidity or alkalinity expressed as pH. The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode. This difference in electrical potential is related to the acidity or pH of the solution. The pH meter is used in many applications ranging from laboratory experimentation to quality control.

The pH meter is used in all those areas where it is important to detect this value. These areas are laboratories, industrial facilities and swimming pools. Above all, in private pools, located outside, it is necessary to control the pH value. This value indicates how acidic or alkaline the water is. The ideal value of a swimming pool is between 7 and 7.4 pH. Any value that deviates from this optimal value influences the quality of the water. The values that are measured with our pH meter influence the effectiveness of the water disinfection media.

In addition, a pH value that deviates a lot can cause damage to materials and the human body. If the value is too low, it can cause leakage damage or corrosion in metals. If the value is too high it can cause itching in the skin, because it is damaging the protective layer of our skin. You can purchase the pH meter in our

Operation of the pH-meter

Potentiometric pH meters measure the voltage between two electrodes and display the result converted to the corresponding pH value. It consists of a simple electronic amplifier and a pair of electrodes, or alternatively a combination electrode, and some kind of display calibrated in pH units. It usually has a glass electrode and a reference electrode, or a combination electrode. The electrodes, or probes, are inserted into the solution to be tested.

The design of the electrodes is the key part: These are rod structures, usually made of glass, with a bulb containing the sensor at the bottom. The glass electrode for measuring pH has a glass bulb specifically designed to be selective to the concentration of hydrogen ions. In immersion in the solution to be tested, the hydrogen ions in the test solution are exchanged for other positively charged ions in the glass bulb, creating an electrochemical potential through the bulb. The electronic amplifier detects the difference in electrical potential between the two electrodes generated in the measurement and converts the potential difference into pH units.

Types of pH Meters

pH meters range from simple and inexpensive pen-type devices, to complex and expensive laboratory instruments, with computer interfaces and various inputs for indicator and temperature measurements that must be introduced to adjust pH variation. The output can be digital or analog, and the devices can be powered by batteries or rely on line power.

Special meters and probes are available for use in special applications, such as harsh environments and biological microenvironments. There are also holographic pH sensors, which allow the measurement of pH colorimetrically, making use of the variety of pH indicators that are available. Additionally, there are commercially available pH meters based on solid-state electrodes, rather than conventional glass electrodes.

Calibration and Maintenance

Very precise measurements require the pH meter to be calibrated before each measurement. More typically, calibration is performed once a day of operation. Calibration is necessary because the glass electrode does not provide reproducible electrostatic potentials for extended periods of use times.

Calibration is performed with at least two standard buffer solutions that cover the range of pH values to be measured. For general purposes, buffers at pH 4.00 and pH 10.00 are appropriate. The pH meter has a calibration control to set the meter reading equal to the value of the first standard damper and a second control that is used to adjust the meter reading to the value of the second damper. A third control allows you to adjust the temperature. More accurate measurements sometimes require calibration to three different pH values.

Good laboratory practice dictates that after each measurement the probes are rinsed with distilled water to remove any trace of the solution being measured, cleaned to absorb the remaining water that could dilute the sample and thus alter the reading.

 

 

PH7 calibration solution PCE-H7 PH7 calibration solution PCE-H7

PCE-PH7-250

pH Meters

PH7 calibration solution PCE-H7

PH electrodes with time can produce measurement errors. To ensure high accuracy, it is recommended to calibrate regularly the equipment.-...
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PH7 calibration solution PCE-H7 PH7 calibration solution PCE-H7

PCE-PH7-500

pH Meters

PH7 calibration solution PCE-H7

PH electrodes with time can produce measurement errors. To ensure high accuracy, it is recommended to calibrate regularly the equipment.-...
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pH-meter PCE-HPHC 10 pH-meter PCE-HPHC 10

PCE-PHC 10

pH Meters

pH-meter PCE-HPHC 10

The pH-meter measures and regulates the pH of different elements and can influence the pH value. The pH-meter is a classic 2-point...
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pH-meter PCE-HM 12 pH-meter PCE-HM 12

PCE-PHM 12

pH Meters

pH-meter PCE-HM 12

The pH-meter has been specially designed to measure pH value in aquariums. The aquarium pH-meter can be connected to a universal mounting...
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3mol/l Conservation Solution PCE-SSO-250

PCE-SSO-250

pH Meters

3mol/l Conservation Solution PCE-SSO-250

Conservation solution for pH electrode- Maintenance solution 3 mol/l in standard bottle of 250 ml
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3mol/l Conservation Solution PCE-SSO-500

PCE-SSO-500

pH Meters

3mol/l Conservation Solution PCE-SSO-500

Conservation solution for pH electrode - Conservation solution 3 mol/l in standard bottle of 500 ml
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pH-meter PCE-228HTE pH-meter PCE-228HTE

PCE-228HTE

pH Meters

pH-meter PCE-228HTE

The pH-meter is a portable pH / mV / ° C device very easy to use. In the pH-meter pH values and temperature can be stored directly on the...
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pH-meter PCE-228HTE-ICA incl. ISO calibration certificate pH-meter PCE-228HTE-ICA incl. ISO calibration certificate

PCE-228HTE-ICA

pH Meters

pH-meter PCE-228HTE-ICA incl. ISO calibration certificate

The pH-meter is a portable pH / mV / ° C device very easy to use. In the pH-meter pH values and temperature can be stored directly on the...
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pH-meter PCE-228-ICA incl. ISO calibration certificate pH-meter PCE-228-ICA incl. ISO calibration certificate

PCE-228-ICA

pH Meters

pH-meter PCE-228-ICA incl. ISO calibration certificate

This pH-meter is an easy-to-manage hand equipment that serves to measure pH / mV / °C. The pH-meter stores pH values and temperature...
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pH-meter PCE-228-Kit pH-meter PCE-228-Kit

PCE-228-Kit

pH Meters

pH-meter PCE-228-Kit

This kit includes everything you need to start using the pH-meter. In addition to the basic content you would receive only the pH-meter...
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pH-meter PCE-228LIQ pH-meter PCE-228LIQ

PCE-228LIQ

pH Meters

pH-meter PCE-228LIQ

The pH-meter is an easy-to-manage handheld device for measuring pH / mV / °C values. This pH-meter can directly store the values on the...
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pH-meter PCE-228LIQ-ICA incl. ISO calibration certificate pH-meter PCE-228LIQ-ICA incl. ISO calibration certificate

PCE-228LIQ-ICA

pH Meters

pH-meter PCE-228LIQ-ICA incl. ISO calibration certificate

The pH-meter is an easy-to-manage handheld device for measuring pH / mV / °C values. This pH-meter can directly store the values on the...
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pH-meter PCE 228M pH-meter PCE 228M

PCE-228M

pH Meters

pH-meter PCE 228M

The pH-meter is an easy-to-manage handheld device for the feeding sector. The pH and temperature values taken by the pH-meter can be read...
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pH-meter PCE-228P for cosmetics pH-meter PCE-228P for cosmetics

PCE-228P

pH Meters

pH-meter PCE-228P for cosmetics

The measurement of pH in the cosmetics is to perform checks with the priority, not only to check that the pH value of the product is...
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pH-meter PCE-228S pH-meter PCE-228S

PCE-228S

pH Meters

pH-meter PCE-228S

The pH-meter and uses to measure the pH value of the soil. The pH and temperature can be stored directly on the SD card. The special pH...
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pH-meter PCE-228SF

PCE-228SF

pH Meters

pH-meter PCE-228SF

The pH-meter is a very easy-to-use hand-held appliance for the sector of cosmetics and health, and to measure in materials with flat...
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pdf 2323791.pdf

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pH-meter PCE-228SF-ICA incl. ISO calibration certificate pH-meter PCE-228SF-ICA incl. ISO calibration certificate

PCE-228SF-ICA

pH Meters

pH-meter PCE-228SF-ICA incl. ISO calibration certificate

The pH-meter is a very easy-to-use hand-held appliance for the sector of cosmetics and health, and to measure in materials with flat...
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pH-meter PCE-228SLUR-ICA incl. ISO calibration certificate pH-meter PCE-228SLUR-ICA incl. ISO calibration certificate

PCE-228SLUR-ICA

pH Meters

pH-meter PCE-228SLUR-ICA incl. ISO calibration certificate

The pH-meter PCE-228SLUR, is an easy-to-manage handheld device for measuring pH / mV / °C values. This pH-meter You can directly store...
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pH-meter PCE-228WINE pH-meter PCE-228WINE

PCE-228WINE

pH Meters

pH-meter PCE-228WINE

The pH-meter PCE-228 is a very easy-to-manage hand equipment to measure pH / mV / °C. You can store pH and temperature values on the SD...
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pdf 2332847.pdf

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table pH-meter PCE-BPH 20 table pH-meter PCE-BPH 20

PCE-BPH 20

pH Meters

table pH-meter PCE-BPH 20

With the table pH-meter you can quickly and accurately analyze liquid samples. Thanks to this you can check with this table pH-meter the...
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Conductivity calibration solution 111.88 mS/cm PCE-CDS-111,8

PCE-CDS-111,8

pH Meters

Conductivity calibration solution 111.88 mS/cm PCE-CDS-111,8

Conductivity calibration solution 111.88 mS/cm, potassium chloride 1 mol/l in a 500 ml bottle with certificate.
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Conductivity calibration solution 15 μS/cm PCE-CDS-15

PCE-CDS-15

pH Meters

Conductivity calibration solution 15 μS/cm PCE-CDS-15

Conductivity Solution 250ml.- 15 μS/cm @ 25 °C - Possic chloride / Glycerin 0.01 M KCI 0.015 mS/cm- DIN EN 27888- Incl. certificate
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Conductivity calibration solution 5 μS/cm PCE-CDS-5

PCE-CDS-5

pH Meters

Conductivity calibration solution 5 μS/cm PCE-CDS-5

Conductivity Solution 250ml.- 5 μS/cm @ 25 °C - Potassic chloride / Glycerin 0.01 M KCI - DIN EN 27888- Incl. certificate
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Calibration solution 84 μS/cm PCE-CDS-84

PCE-CDS-84

pH Meters

Calibration solution 84 μS/cm PCE-CDS-84

Conductivity calibration solution 84 μS/cm - EC Value: @25°C / 84 μS/cm - Size: 250 mL - Packaging: 1 bottle - Certificate of analysis: Yes
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