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pH Meters

pH measuring instruments are used mainly in the chemical, pharmaceutical, environmental and food industries. In the Analytics shop you will find a large selection of different measuring instruments for the determination of the pH value. For example, from manufacturer Mettler Toledo with its pH measuring devices. WTW also supplies high-quality solutions for pH measurement: The inoLab laboratory devices with IDS pH sensors provide the highest data quality and process signals directly in the sensor. In the Analytics shop you will find numerous measuring instruments from Mettler with the appropriate cables and electrodes. Since the manufacturer WTW only uses DIN plugs and Mettler Toledo BNC plugs in our product portfolio, we carry in our assortment any adapters for the corresponding devices - so you do not have to compromise when purchasing a Mettler-Toledo or WTW product.

If you need a different pH meter, please feel free to contact us. Our customer service will be happy to advise you on any questions.

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pH meters

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  1. WTW

    Pocket pH meter pH 3110 single device

    €498.00
    SKU: WW2AA110
    In Stock
  2. WTW

    Pocket pH meter pH 3110 SET 2

    €623.00
    SKU: WW2AA112
    In Stock
  3. WTW

    Pocket pH meter pH 3310 SET 2

    €798.00
    SKU: WW2AA312
  4. WTW

    Pocket pH meter pH 3310 single device

    €617.00
    SKU: WW2AA310
  5. Mettler-Toledo

    METER PH SEVENEASY S20 METER PH

    Regular Price: €1,158.00

    Special Price €984.30

    SKU: MR30019029
  6. Mettler-Toledo

    METER PH SEVENEASY S20 METER PH

    Regular Price: €1,059.00

    Special Price €900.15

    SKU: MR30019032
  7. Mettler-Toledo

    SevenExcellence pH/mV meter S400,

    Regular Price: €2,103.00

    Special Price €1,787.55

    SKU: MR30046241
  8. Mettler-Toledo

    Seven2Go pH/mV Meter S2-Field kit

    Regular Price: €663.00

    Special Price €563.55

    SKU: MR30207951
  9. WTW

    digital pH/redox transmitter

    €1,238.40
    SKU: WW109171
  10. WTW

    Digital pH/redox transmitter

    €1,080.00
    SKU: WW109177
  11. WTW

    Standard-pH/Redox-fitting, 7m cable

    €923.00
    SKU: WW109191
  12. WTW

    Case set for KS profiline pH

    €165.00
    SKU: WW2A0001
  13. WTW

    pH/redox transmitter, digital

    €1,077.60
    SKU: WW109170
  14. Mettler-Toledo

    SevenCompact, pH S220-Basic

    Regular Price: €896.00

    Special Price €761.60

    SKU: MR30019028
  15. Mettler-Toledo

    METER PH SEVENEASY S20 METER PH

    Regular Price: €1,238.00

    Special Price €1,052.30

    SKU: MR30019031
  16. Mettler-Toledo

    SevenExcellence pH/mV meter S400, meter

    Regular Price: €1,855.00

    Special Price €1,576.75

    SKU: MR30046240
  17. Mettler-Toledo

    SevenExcellence pH/mV meter S400,

    Regular Price: €2,180.00

    Special Price €1,853.00

    SKU: MR30046242
  18. Mettler-Toledo

    SevenExcellence pH/Ion meter S500,

    Regular Price: €1,979.00

    Special Price €1,682.15

    SKU: MR30046248
  19. Mettler-Toledo

    SevenExcellence pH/Ion meter S500,

    Regular Price: €2,230.00

    Special Price €1,895.50

    SKU: MR30046249
  20. Mettler-Toledo

    SevenExcellence pH/Ion meter S500

    Regular Price: €2,308.00

    Special Price €1,961.80

    SKU: MR30046250
  21. Mettler-Toledo

    SevenExcellence pH/Ion meter S500

    Regular Price: €2,811.00

    Special Price €2,389.35

    SKU: MR30046251
  22. Mettler-Toledo

    SevenExcellence pH/mV conductivity S470

    Regular Price: €2,344.00

    Special Price €1,992.40

    SKU: MR30046252
  23. Mettler-Toledo

    SevenExcellence pH/mV conductivity S470

    Regular Price: €2,760.00

    Special Price €2,346.00

    SKU: MR30046253
  24. Mettler-Toledo

    SevenExcellence pH/mV conductivity S470

    Regular Price: €3,173.00

    Special Price €2,697.05

    SKU: MR30046254
  25. Mettler-Toledo

    SevenExcellence S475, pH/mV , Ion ,

    Regular Price: €2,789.00

    Special Price €2,370.65

    SKU: MR30046255
  26. Mettler-Toledo

    SevenExcellence pH/mV S400-Micro Kit

    Regular Price: €2,081.00

    Special Price €1,768.85

    SKU: MR30092982
  27. Mettler-Toledo

    SevenExcellence pH/mV S400-uMix Kit with

    Regular Price: €2,236.00

    Special Price €1,900.60

    SKU: MR30092983
  28. Mettler-Toledo

    SevenExcellence pH/mV, cond., DO/BOD

    Regular Price: €4,994.00

    Special Price €4,244.90

    SKU: MR30092988
  29. Mettler-Toledo

    SevenExcellence pH/ion, cond., DO/BOD

    Regular Price: €5,173.00

    Special Price €4,397.05

    SKU: MR30092989
  30. Mettler-Toledo

    SevenCompact pH/Ion S220-Micro Kit with

    Regular Price: €1,197.00

    Special Price €1,017.45

    SKU: MR30096985
  31. Mettler-Toledo

    SevenCompact pH/Ion S220-uMix Kit with

    Regular Price: €1,300.00

    Special Price €1,105.00

    SKU: MR30096986
  32. Mettler-Toledo

    SevenCompact S210-Basic

    Regular Price: €789.00

    Special Price €670.65

    SKU: MR30130862
  33. Mettler-Toledo

    Seven2Go pH/Ion Meter S8-Meter Seven2Go

    Regular Price: €798.00

    Special Price €678.30

    SKU: MR30207874
  34. Mettler-Toledo

    Seven2Go pH/Ion Meter S8-Standard kit

    Regular Price: €963.00

    Special Price €818.55

    SKU: MR30207875
  35. Mettler-Toledo

    Seven2Go pH/Ion Meter S8-Field kit

    Regular Price: €1,008.00

    Special Price €856.80

    SKU: MR30207877
  36. Mettler-Toledo

    Seven2Go pH/Ion Meter S8-Biotech kit

    Regular Price: €1,087.00

    Special Price €923.95

    SKU: MR30207878
  37. Mettler-Toledo

    Seven2Go pH/Ion Meter S8-Fluoride kit

    Regular Price: €1,336.00

    Special Price €1,135.60

    SKU: MR30207879
  38. Mettler-Toledo

    Seven2Go pH/mV Meter S2-Meter Seven2Go

    €487.00
    SKU: MR30207949
  39. Mettler-Toledo

    Seven2Go pH/mV Meter S2-Standard kit

    Regular Price: €616.00

    Special Price €523.60

    SKU: MR30207950
  40. Mettler-Toledo

    Seven2Go pH/mV Meter S2-Food kit

    Regular Price: €713.00

    Special Price €606.05

    SKU: MR30207952
  41. Mettler-Toledo

    Seven2Go pH/mV  Meter S2-Light kit

    Regular Price: €546.00

    Special Price €464.10

    SKU: MR30207953
  42. Mettler-Toledo

    pH-Gerät FiveGo, tragbar (Entry-Level)

    €342.00
    SKU: MR30266946
  43. Mettler-Toledo

    SevenCompact Duo pH/ cond benchtop meter S213-B

    Regular Price: €1,637.00

    Special Price €1,391.45

    SKU: MR30339958
  44. Mettler-Toledo

    SevenCompact Duo pH/conductivity meter S213-Kit

    Regular Price: €2,059.00

    Special Price €1,750.15

    SKU: MR30339959
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In the Analytics-Shop you will find - among others – the quality pH-meters by Mettler-Toledo.

These are used in many different areas. For instance in applications that require very accurate measurement results, particularly in the area of hygiene (food and beverage) they play an important role or even in demanding wastewater applications and pure and ultrapure water.

pH measurement with glass electrodes

pH meter with glass electrodes are the most commonly used measuring devices, therefore the said electrode is generally referred to as "pH-electrode". In this method the electric potential of the glass electrode is used which is directly dependent on the H+ ion concentration. Consequently the potential difference to the reference electrode resulting from the voltage reflects the pH level substantially linear. The so-called "reference electrode" is a silver-silver chloride half cell in most cases which is joined together with the pH electrode to a rod measuring chain

Advantages:

  • widespread method of pH level measurement

Disadvantages:

  • only slightly more resilient power can be generated, i.d. interference of the measurement by the flow potential is easily possible
  • calibration of both the zero point and the gain/ increase must be adjustable
  • the diaphragm can be contaminated or drained

pH measurement with field effect transistors

The second option is using pH meters with ion-sensitive field effect transistors (ISFET).

Advantages:

  • the pH values are more stable
  • retrofitted electronics show resistancy and sturdiness

Disadvantages:

  • number of possible measurement processes (= lifetime) is less
  • relatively unpopular type of pH measurement

pH measurement with hydrogen electrodes

Last but not least some more information about a traditional method of pH measurement: the use of hydrogen electrodes. This technique is based on the pH dependence of the hydrogen potential.

Advantages:

  • high mechanical stability
  • input resistance (impedance) is very low
  • no alkali error
  • no acid error

Disadvantages:

  • exhibit sensitivity to heavy metal salts (copper, silver, mercury)