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.

 

 

Conductivity calibration solution 12,88 mS/cm

PCE-CDS-12,88

pH Meters

Conductivity calibration solution 12,88 mS/cm

Conductivity calibration solution 12,88 mS/cm, potassium chloride 0.01 mol/l in a 500 ml bottle with certificate.
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Conductivity calibration solution 1413μS/cm PCE-CDS-1413

PCE-CDS-1413-250

pH Meters

Conductivity calibration solution 1413μS/cm PCE-CDS-1413

Conductivity calibration solution 1413μS/cm, potassium chloride 0.01 mol/l in a bottle of 500 ml or 250 ml with certificate.
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Conductivity calibration solution 1413μS/cm

PCE-CDS-1413-500

pH Meters

Conductivity calibration solution 1413μS/cm

Conductivity calibration solution 1413μS/cm, potassium chloride 0.01 mol/l in a bottle of 500 ml or 250 ml with certificate.
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pH-meter PCE-HM 15 pH-meter PCE-HM 15

PCE-PH 15

pH Meters

pH-meter PCE-HM 15

The pH-meter is a device that determines the pH value in liquids. Thanks to its simple handling, this pH-meter is ideal for use in...
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pdf 2323730.pdf

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pH-meter PCE-HH 17 pH-meter PCE-HH 17

PCE-PH 17

pH Meters

pH-meter PCE-HH 17

The pH-meter is a device with a completely glass electrode. The fact that the pH-meter electrode is glass allows the cleaning of the...
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pdf 2323754.pdf

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pH-meter PCE-HH 18 pH-meter PCE-HH 18

PCE-PH 18

pH Meters

pH-meter PCE-HH 18

The pH-meter is a device to measure the pH with a pointed glass electrode. Thanks to this type of electrode you can measure with pH-meter...
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pdf 2323759.pdf

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pH-meter PCE-H 22 pH-meter PCE-H 22

PCE-PH 22

pH Meters

pH-meter PCE-H 22

This water-resistant pH-meter is able to quickly and accurately detect pH and temperature. Thanks to the double display on the screen of...
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pH-meter PCE-PH 228 pH-meter PCE-PH 228

PCE-PH 228

pH Meters

pH-meter PCE-PH 228

This high-end pH-meter is synonymous with precision, easy handling and conforms to the Good Laboratory Practices (BPL). The pH-meter...
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PH meter PCE-PH 228HTE PH meter PCE-PH 228HTE

PCE-PH 228HTE

pH Meters

PH meter PCE-PH 228HTE

This high-end pH meter is synonymous with precision, easy handling and conforms to the Good Laboratory Practices (BPL). The pH meter...
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pH-meter PCE-PH 22-TUM 20-CM 41-KIT for saltwater pools pH-meter PCE-PH 22-TUM 20-CM 41-KIT for saltwater pools

PCE-PH 22-TUM 20-CM 41-KIT

pH Meters

pH-meter PCE-PH 22-TUM 20-CM 41-KIT for saltwater pools

The pH-meter for saltwater pools is an easy-to-use device to determine pH value, turbidity and/or salinity in different liquids. With the...
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pH-meter PCE-H 28L pH-meter PCE-H 28L

PCE-PH 28L

pH Meters

pH-meter PCE-H 28L

The digital pH-meter is equipped with a flat membrane electrode. The electrode of the digital pH-meter is elongated. Thus you can enter...
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pdf 2314316.pdf

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pH-meter PCE-HM 30 pH-meter PCE-HM 30

PCE-PH 30

pH Meters

pH-meter PCE-HM 30

The pH-meter PCE-PH 30 is an ideal device to check the most important water parameters. The pH-meter PCE-PH 30 is used to measure and...
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PH10 calibration solution PCE-H10 PH10 calibration solution PCE-H10

PCE-PH10-500

pH Meters

PH10 calibration solution PCE-H10

PH electrodes over time can produce measurement errors. To ensure high accuracy, it is recommended to calibrate regularly the equipment.-...
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pH-meter PCE-HH20 pH-meter PCE-HH20

PCE-PH20

pH Meters

pH-meter PCE-HH20

The pH-meter is a portable device easy to handle and to determine the pH value quickly and accurately. The ph meter has a three-point...
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pdf 2323724.pdf

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pH-meter PCE-H20M

PCE-PH20M

pH Meters

pH-meter PCE-H20M

The pH-meter is an easy-to-manage handheld device for the feeding sector. The large screen that has the pH-meter allows easy reading of...
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pH-meter for floor PCE-PH20S pH-meter for floor PCE-PH20S

PCE-PH20S

pH Meters

pH-meter for floor PCE-PH20S

This soil pH-meter has been developed to directly determine the pH value of the soil. With the help of the pH-meter it is possible to...
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pH-meter PCE-PH20WINE for wine pH-meter PCE-PH20WINE for wine

PCE-PH20WINE

pH Meters

pH-meter PCE-PH20WINE for wine

The pH-meter is an easy-to-manage handheld device to determine the pH value quickly and accurately. The pH-meter has a 3-point...
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pdf 2322447.pdf

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PH4 calibration solution PCE-HPH4

PCE-PH4-250

pH Meters

PH4 calibration solution PCE-HPH4

PH electrodes over time can produce measurement errors. To ensure high accuracy, it is recommended to calibrate regularly the equipment.-...
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PH4 calibration solution PCE-HPH4

PCE-PH4-500

pH Meters

PH4 calibration solution PCE-HPH4

PH electrodes over time can produce measurement errors. To ensure high accuracy, it is recommended to calibrate regularly the equipment.-...
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PH4 + pH7 + pH10 calibration solution PCE-HH4710 PH4 + pH7 + pH10 calibration solution PCE-HH4710

PCE-PH4710-250

pH Meters

PH4 + pH7 + pH10 calibration solution PCE-HH4710

PH electrodes over time can produce measurement errors. To ensure high accuracy, it is recommended to calibrate regularly the equipment.-...
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PH4 + pH7 + pH10 calibration solution PCE-HH4710 PH4 + pH7 + pH10 calibration solution PCE-HH4710

PCE-PH4710-500

pH Meters

PH4 + pH7 + pH10 calibration solution PCE-HH4710

PH electrodes over time can produce measurement errors. To ensure high accuracy, it is recommended to calibrate regularly the equipment.-...
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Calibration Solution PCE-HH47 Calibration Solution PCE-HH47

PCE-PH47-250

pH Meters

Calibration Solution PCE-HH47

To ensure high accuracy, it is recommended that the equipment be regularly repaired.- pH 4.01 and pH 7.01- Dosage with certificate- You...
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Calibration Solution PCE-HH47 Calibration Solution PCE-HH47

PCE-PH47-50

pH Meters

Calibration Solution PCE-HH47

To ensure high accuracy, it is recommended that the equipment be regularly repaired.- pH 4.01 and pH 7.01- Dosage with certificate- You...
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€25.29 (inc. VAT)
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Calibration Solution PCE-HH47 Calibration Solution PCE-HH47

PCE-PH47-500

pH Meters

Calibration Solution PCE-HH47

To ensure high accuracy, it is recommended that the equipment be regularly repaired.- pH 4.01 and pH 7.01- Dosage with certificate- You...
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€36.18 (inc. VAT)
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