pH meters

pH Meters

pH measuring instruments are used mainly in the chemical, pharmaceutical, environmental and food industries. We offer a large selection of different measuring instruments for the determination of pH values in the Analytics shop such as pH meters from Mettler Toledo and high-quality solutions for pH measurement from WTW. The inoLab laboratory devices with IDS pH sensors provide the highest data quality and process signals directly in the sensor.

Measuring instruments with the corresponding cables, electrodes, accessories and adaptors are available, e.g. products from the manufacturer WTW use only DIN plugs and Mettler Toledo BNC plugs which are available in our shop.

Please feel free to contact us if you have any questions.

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Product Image of Pocket pH meter pH 3310 SET 2
Pocket pH meter pH 3310 SET 2
Item number: WW2AA312
Brand: WTW

In stock

€985.00
Product Image of Pocket pH meter pH 3110 single device
Pocket pH meter pH 3110 single device
Item number: WW2AA110
Brand: WTW

In stock

€615.00
Product Image of testo 206 pH3 - Instrument kit
testo 206 pH3 - Instrument kit
Item number: TS05632063
Brand: Testo

In stock

€123.00
Product Image of pH Meter SevenDirect SD20 LowVol Kit
pH Meter SevenDirect SD20 LowVol Kit
Item number: MR30671561
Brand: Mettler-Toledo
€1,680.00
Product Image of pH Meter SevenDirect SD20 Viscous Kit
pH Meter SevenDirect SD20 Viscous Kit
Item number: MR30671560
Brand: Mettler-Toledo
€1,730.00
Product Image of pH Meter SevenDirect SD20 Solids Kit
pH Meter SevenDirect SD20 Solids Kit
Item number: MR30671559
Brand: Mettler-Toledo
€1,590.00
Product Image of pH Meter SevenDirect SD20 Pure H2O K
pH Meter SevenDirect SD20 Pure H2O K
Item number: MR30671558
Brand: Mettler-Toledo
€1,645.00
Product Image of pH Meter SevenDirect SD20 Organic Kit
pH Meter SevenDirect SD20 Organic Kit
Item number: MR30671557
Brand: Mettler-Toledo
€1,635.00
Product Image of pH Meter SevenDirect SD20 HA Kit
pH Meter SevenDirect SD20 HA Kit
Item number: MR30671556
Brand: Mettler-Toledo
€1,505.00
Product Image of pH Meter SevenDirect SD20 Stirrer Kit
pH Meter SevenDirect SD20 Stirrer Kit
Item number: MR30671555
Brand: Mettler-Toledo
€1,670.00
Product Image of pH Meter SevenDirect SD20 Kit
pH Meter SevenDirect SD20 Kit
Item number: MR30671554
Brand: Mettler-Toledo
€1,415.00
Product Image of pH Meter SevenDirect SD20
pH Meter SevenDirect SD20
Item number: MR30671550
Brand: Mettler-Toledo
€1,070.00
Product Image of Pocket pH meter pH 3310 single device
Pocket pH meter pH 3310 single device
Item number: WW2AA310
Brand: WTW
€761.00
Product Image of Pocket pH meter pH 3110 SET 2
Pocket pH meter pH 3110 SET 2
Item number: WW2AA112
Brand: WTW

In stock

€769.00
Product Image of inoLab® pH/ION 7320 pH/ISE benchtop meter (DIN)
inoLab® pH/ION 7320 pH/ISE benchtop meter (DIN)
Item number: WW1GA330
Brand: WTW
€2,111.00
Product Image of Lab pH Meter inoLab pH 7110 SET 4 pH/mV-meter
Lab pH Meter inoLab pH 7110 SET 4 pH/mV-meter
Item number: WW1AA114
Brand: WTW
€1,035.00
Product Image of inoLab® pH 7110 pH/mV benchtop meter (DIN)
inoLab® pH 7110 pH/mV benchtop meter (DIN)
Item number: WW1AA110
Brand: WTW
€778.00
Product Image of Standard-pH/Redox-fitting, 7m cable, Model name : SensoLyt® 700-7
Standard-pH/Redox-fitting, 7m cable, Model name : SensoLyt® 700-7
Item number: WW109191
Brand: WTW
€1,242.00
Product Image of Digital pH/redox transmitter (with SensoLyt PtA), Model name : SensoLyt 700 IQ/SET1
Digital pH/redox transmitter (with SensoLyt PtA), Model name : SensoLyt 700 IQ/SET1
Item number: WW109174
Brand: WTW
€1,698.43
Product Image of Digital pH/redox transmitter (with SensoLyt SEA), Model name : SensoLyt® 700 IQ/SET
Digital pH/redox transmitter (with SensoLyt SEA), Model name : SensoLyt® 700 IQ/SET
Item number: WW109173
Brand: WTW
€1,638.00
Product Image of digital pH/redox transmitter, Model name : SensoLyt® 700 IQ SW
digital pH/redox transmitter, Model name : SensoLyt® 700 IQ SW
Item number: WW109171
Brand: WTW
€1,742.14
Product Image of pH/redox transmitter, digital, SensoLyt 700 IQ, Model name : SensoLyt® 700 IQ
pH/redox transmitter, digital, SensoLyt 700 IQ, Model name : SensoLyt® 700 IQ
Item number: WW109170
Brand: WTW
€1,514.57
Product Image of FiveGo Portable F2 pH/mV Meter (Entry-Level)
FiveGo Portable F2 pH/mV Meter (Entry-Level)
Item number: MR30266946
Brand: Mettler-Toledo
€356.00
Product Image of Seven2Go pH/mV  Meter S2-Light kit
Seven2Go pH/mV  Meter S2-Light kit
Item number: MR30207953
Brand: Mettler-Toledo
€630.00
Product Image of Seven2Go pH/mV Meter S2-Food kit, replaces MR51302529
Seven2Go pH/mV Meter S2-Food kit, replaces MR51302529
Item number: MR30207952
Brand: Mettler-Toledo
€825.00
Product Image of Seven2Go pH/mV Meter S2-Field kit, replaces MR51302523
Seven2Go pH/mV Meter S2-Field kit, replaces MR51302523
Item number: MR30207951
Brand: Mettler-Toledo
€775.00
Product Image of Seven2Go pH/mV Meter S2-Standard kit, replaces MR51302522
Seven2Go pH/mV Meter S2-Standard kit, replaces MR51302522
Item number: MR30207950
Brand: Mettler-Toledo
€715.00
Product Image of Seven2Go pH/mV Meter S2-Meter Seven2Go
Seven2Go pH/mV Meter S2-Meter Seven2Go
Item number: MR30207949
Brand: Mettler-Toledo
€575.00
Product Image of Seven2Go pH/Ion Meter S8-Fluoride kit
Seven2Go pH/Ion Meter S8-Fluoride kit
Item number: MR30207879
Brand: Mettler-Toledo
€1,575.00
Product Image of Seven2Go pH/Ion Meter S8-Biotech kit
Seven2Go pH/Ion Meter S8-Biotech kit
Item number: MR30207878
Brand: Mettler-Toledo
€1,255.00
Product Image of Seven2Go pH/Ion Meter S8-Field kit, replaces MR51302583
Seven2Go pH/Ion Meter S8-Field kit, replaces MR51302583
Item number: MR30207877
Brand: Mettler-Toledo
€1,160.00
Product Image of Seven2Go pH/Ion Meter S8-Standard kit, replaces MR51302582
Seven2Go pH/Ion Meter S8-Standard kit, replaces MR51302582
Item number: MR30207875
Brand: Mettler-Toledo
€1,115.00
Product Image of Seven2Go pH/Ion Meter S8-Meter Seven2Go, replaces MR51302581
Seven2Go pH/Ion Meter S8-Meter Seven2Go, replaces MR51302581
Item number: MR30207874
Brand: Mettler-Toledo
€920.00
Product Image of SevenExcellence pH/ion, cond., DO/BOD
SevenExcellence pH/ion, cond., DO/BOD
Item number: MR30092989
Brand: Mettler-Toledo
€7,125.00
Product Image of SevenExcellence pH/mV, cond., DO/BOD
SevenExcellence pH/mV, cond., DO/BOD
Item number: MR30092988
Brand: Mettler-Toledo
€6,840.00
Product Image of SevenExcellence pH/mV S400-uMix Kit with
SevenExcellence pH/mV S400-uMix Kit with
Item number: MR30092983
Brand: Mettler-Toledo
€3,105.00
Product Image of SevenExcellence pH/mV S400-Micro Kit
SevenExcellence pH/mV S400-Micro Kit
Item number: MR30092982
Brand: Mettler-Toledo
€2,910.00
Product Image of SevenExcellence S475, pH/mV , Ion ,
SevenExcellence S475, pH/mV , Ion ,
Item number: MR30046255
Brand: Mettler-Toledo
€3,915.00
Product Image of SevenExcellence pH/mV conductivity S470-USP-K
SevenExcellence pH/mV conductivity S470-USP-K
Item number: MR30046254
Brand: Mettler-Toledo
€4,425.00
Product Image of SevenExcellence pH/mV conductivity S470-Std-K
SevenExcellence pH/mV conductivity S470-Std-K
Item number: MR30046253
Brand: Mettler-Toledo
€3,880.00
Product Image of SevenExcellence pH/mV conductivity S470
SevenExcellence pH/mV conductivity S470
Item number: MR30046252
Brand: Mettler-Toledo
€3,295.00
Product Image of SevenExcellence pH/Ion meter S500
SevenExcellence pH/Ion meter S500
Item number: MR30046251
Brand: Mettler-Toledo
€3,930.00
Product Image of SevenExcellence pH/Ion meter S500
SevenExcellence pH/Ion meter S500
Item number: MR30046250
Brand: Mettler-Toledo
€3,240.00
Product Image of SevenExcellence pH/Ion meter S500,
SevenExcellence pH/Ion meter S500,
Item number: MR30046249
Brand: Mettler-Toledo
€3,130.00
Product Image of SevenExcellence pH/Ion meter S500,
SevenExcellence pH/Ion meter S500,
Item number: MR30046248
Brand: Mettler-Toledo
€2,820.00
Product Image of SevenExcellence pH/mV meter S400,
SevenExcellence pH/mV meter S400,
Item number: MR30046242
Brand: Mettler-Toledo
€3,055.00
Product Image of SevenExcellence pH/mV meter S400,
SevenExcellence pH/mV meter S400,
Item number: MR30046241
Brand: Mettler-Toledo
€2,930.00
Product Image of SevenExcellence pH/mV meter S400, meter
SevenExcellence pH/mV meter S400, meter
Item number: MR30046240
Brand: Mettler-Toledo
€2,620.00
Product Image of SevenExcellence pH/mV expansion unit
SevenExcellence pH/mV expansion unit
Item number: MR30034472
Brand: Mettler-Toledo
€955.00
Product Image of SevenExcellence pH/Ion expansion unit
SevenExcellence pH/Ion expansion unit
Item number: MR30034471
Brand: Mettler-Toledo
€1,210.00

Quality pH-meters by Mettler-Toledo are available in the Analytics-Shop.

These are used in many different areas. For instance, in industries which require very precise measurement results to maintain hygiene standards, like in the food and beverage industry and fulfilling requirements in wastewater treatments and water purification methods.

pH measurement with glass electrodes

pH meters with glass electrodes are the most commonly used measuring devices. Hence, this electrode is generally known as the "pH-electrode". In this method, the electric potential of the glass electrode is measured which is directly dependent on the H+ ion concentration. The potential difference to the reference electrode resulting from the voltage difference converts into the pH reading. The reference electrode is normally a silver-silver chloride half cell which is joined together with the pH electrode to form a combination electrode

Advantages:

  • most common method of pH measurement

Disadvantages:

  • only slightly more resilient electric current can be generated, i.d. interference of the measurement by the flow potential is easily possible
  • both the zero indicator and the increase must be adjusted before calibration
  • the diaphragm may be contaminated or worn out

pH measurement with field effect transistors

This involves using pH meters with ion-sensitive field effect transistors (ISFET).

Advantages:

  • pH values are more stable
  • add on electronics unit show more consistent results

Disadvantages:

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

pH measurement with hydrogen electrodes

Traditional method of pH measurement with 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)