Electrodes

Wolflabs is currently the public sector's top supplier for this range of products through framework agreement LAB5028 LU. The electrodes we are featuring are from Hanna Instruments, Mettler Toledo and Sentek Limited that measure ammonium, calcium, chloride, fluoride, nitrate, ORP and pH, some units suitable for testing Tris buffers, made from epoxy, glass, PEEK, pastic, polysulfone, POM and steel, with bluetooth, BNC, BNC + pin, BNC + RCA (Cinch), DIN and jack plug types, cable lengths from 1 to 10 metres, warranty periods from 0 to 12 months. Use our comparison table to identify the best product for your application. The most important questions to ask are the application it will be used for, the parameters being measured, if it is required to test Tris buffers, the electrode material, plug type and length of cable required.

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  • ? Price £
    50 - 99.99 (12)
    100 - 149.99 (12)
    150 - 199.99 (26)
    200 - 249.99 (17)
    250 - 499.99 (10)
  • ? Manufacturer
    Hanna Instruments (20)
    Mettler Toledo (41)
    Sentek Limited (16)
  • ?Parameter measured
    Ammonium (1)
    Calcium (1)
    Chloride (1)
    Fluoride (1)
    Nitrate (1)
    ORP (1)
    pH (71)
  • ?Suitable for testing Tris buffers?
    No (36)
    Yes (41)
  • ?Electrode material
    Epoxy (10)
    Glass (46)
    PEEK (8)
    Plastic (8)
    Polysulfone (2)
    POM (2)
    Steel (1)
  • ?Electrode plug type
    Bluetooth (4)
    BNC (55)
    BNC + pin (2)
    BNC + RCA (Cinch) (10)
    DIN (1)
    Jack (5)
  • ?Cable length / m
    0 (27)
    1 (41)
    1.2 (3)
    1.8 (3)
    2 (1)
    5 (1)
    10 (1)
  • ?Suitable for general purpose applications
    No (29)
    Yes (48)
  • ?Suitable for biotech samples
    No (43)
    Yes (34)
  • ?Suitable for field samples
    No (55)
    Yes (22)
  • ?Suitable for cream, fat and soil samples
    No (65)
    Yes (12)
  • ?Suitable for leather, paper and skin samples
    No (74)
    Yes (3)
  • ?Suitable for dairy samples
    No (58)
    Yes (19)
  • ?Suitable for acid, paint solvents and tris samples
    No (56)
    Yes (21)
  • ?Suitable for municipal water samples
    No (47)
    Yes (30)
  • ?Suitable for acid, hydrocarbon and sea samples
    No (71)
    Yes (6)
  • ?Suitable for food samples
    No (61)
    Yes (16)
  • ?Warranty / months
    0 (41)
    6 (20)
    12 (16)

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Parameter measured ? Suitable for testing Tris buffers? ? Electrode material ? Electrode plug type ? Cable length m? Warranty months? Offer price ? Quantity


Special Offer
Sentek Limited P11 pH No Glass BNC 1 12 £64.44
Special Offer
Sentek Limited P14 pH No Epoxy BNC 1 12 £64.44
Special Offer
Sentek Limited P11/Protected bulb pH No Glass BNC 1 12 £74.59
Special Offer
Sentek Limited P12 pH No Glass BNC 1 12 £75.70
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Sentek Limited P13 pH No Glass BNC 1 12 £76.81
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Sentek Limited P14/DJ pH Yes Epoxy BNC 1 12 £77.37
Special Offer
Mettler Toledo LE407 pH No POM BNC 1 0 £82.96
Special Offer
Mettler Toledo LE409 pH No Glass BNC 1 0 £91.72
Special Offer
Sentek Limited P11/DJ pH Yes Glass BNC 1 12 £95.42
Special Offer
Sentek Limited P16 pH Yes Glass BNC 1 12 £95.42
Special Offer
Sentek Limited P17 pH No Epoxy BNC 1 12 £95.42
Special Offer
Sentek Limited P19/TEF pH No Epoxy BNC 1 12 £99.18
Special Offer
Mettler Toledo InLab Easy BNC pH Yes Polysulfone BNC 1 0 £105.72
Special Offer
Sentek Limited PI10/Lab pH Yes Glass BNC 1 12 £106.25
Special Offer
Hanna Instruments HI-1230B pH No Plastic BNC 1 6 £108.96
Special Offer
Mettler Toledo LE420 pH Yes Glass BNC 1 0 £115.71
Special Offer
Mettler Toledo InLab Expert pH Yes PEEK BNC 0 0 £118.64
Special Offer
Mettler Toledo LE438 pH No POM BNC + RCA (Cinch) 1 0 £119.23
Special Offer
Hanna Instruments HI-12300 pH No Plastic Jack 1 6 £122.58
Special Offer
Mettler Toledo InLab Routine pH Yes Glass BNC 0 0 £123.94
Special Offer
Mettler Toledo LE422 pH No Glass BNC 1 0 £126.29
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Mettler Toledo LE427 pH No Glass BNC 1.2 0 £126.29
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Hanna Instruments HI-1131B pH No Glass BNC 1 6 £135.61
Special Offer
Hanna Instruments HI-1413B pH No Glass BNC 1 6 £140.91
Special Offer
Hanna Instruments HI-3230B ORP No Plastic BNC 1 6 £155.96
Special Offer
Mettler Toledo InLab Surface pH No Polysulfone BNC 0 0 £158.22
Special Offer
Hanna Instruments HI-11310 pH Yes Glass Jack 1 6 £159.22
Special Offer
Mettler Toledo LE410 pH No Glass BNC + RCA (Cinch) 1 0 £160.95
Special Offer
Mettler Toledo InLab Science pH Yes Glass BNC 0 0 £162.32
Special Offer
Hanna Instruments FC200D pH No Plastic DIN 1 6 £163.69
Special Offer
Hanna Instruments HI-1053B pH No Glass BNC 1 6 £164.10
Special Offer
Mettler Toledo InLab Routine Pro pH Yes Glass BNC 0 0 £165.05
Special Offer
Mettler Toledo InLab Expert Pro pH Yes PEEK BNC + RCA (Cinch) 1.2 0 £167.10
Special Offer
Mettler Toledo InLab Semi-Micro pH Yes Glass BNC 0 0 £167.10
Special Offer
Hanna Instruments FC200B pH No Plastic BNC 1 6 £172.25
Special Offer
Hanna Instruments HI-1043B pH Yes Glass BNC 1 6 £176.32
Special Offer
Mettler Toledo InLab Cool pH Yes Glass BNC 0 0 £177.00
Special Offer
Mettler Toledo InLab Pure pH Yes Glass BNC 0 0 £177.00
Special Offer
Hanna Instruments HI-1053P pH No Glass BNC + pin 1 6 £177.54
Special Offer
Mettler Toledo InLab Expert Pro-ISM pH Yes PEEK BNC + RCA (Cinch) 1.2 0 £181.34
Special Offer
Mettler Toledo InLab Semi-Micro-L pH Yes Glass BNC 0 0 £181.95
Special Offer
Mettler Toledo InLab Solids pH Yes Glass BNC 0 0 £183.18
Special Offer
Mettler Toledo InLab Micro pH Yes Glass BNC 0 0 £184.56
Special Offer
Mettler Toledo InLab Expert Go pH Yes PEEK BNC + RCA (Cinch) 1.8 0 £185.26
Special Offer
Mettler Toledo InLab Hydrofluoric pH Yes Glass BNC 0 0 £189.52
Special Offer
Mettler Toledo InLab Expert Pro-2m-ISM pH Yes PEEK BNC + RCA (Cinch) 2 0 £190.94
Special Offer
Mettler Toledo InLab Routine Pro-ISM pH Yes Glass BNC 0 0 £190.94
Special Offer
Hanna Instruments HI-12302 pH No Plastic Bluetooth 0 6 £191.37
Special Offer
Hanna Instruments FC2020 pH No Plastic Jack 1 6 £195.04
Special Offer
Hanna Instruments HI-10530 pH No Glass Jack 1 6 £195.04
Special Offer
Hanna Instruments HI-10430 pH Yes Glass Jack 1 6 £205.21
Special Offer
Hanna Instruments HI-11102 pH Yes Glass Bluetooth 0 6 £207.66
Special Offer
Mettler Toledo InLab Ultra Micro-ISM pH Yes Glass BNC 0 0 £215.74
Special Offer
Hanna Instruments FC2022 pH No Plastic Bluetooth 0 6 £225.56
Special Offer
Hanna Instruments HI-11312 pH No Glass Bluetooth 0 6 £225.56
Special Offer
Mettler Toledo InLab Expert Go-ISM pH Yes PEEK BNC + RCA (Cinch) 1.8 0 £232.73
Special Offer
Mettler Toledo InLab Power pH Yes Glass BNC 0 0 £234.16
Special Offer
Sentek Limited Ammonium ISE Ammonium No Epoxy BNC 1 12 £235.88
Special Offer
Sentek Limited Calcium ISE Calcium No Epoxy BNC 1 12 £235.88
Special Offer
Sentek Limited Chloride ISE Chloride No Epoxy BNC 1 12 £235.88
Special Offer
Sentek Limited Fluoride ISE Fluoride No Epoxy BNC 1 12 £235.88
Special Offer
Sentek Limited Nitrate ISE Nitrate No Epoxy BNC 1 12 £235.88
Special Offer
Mettler Toledo InLab Flex-Micro pH Yes Epoxy BNC 1 0 £237.00
Special Offer
Mettler Toledo InLab Solids Go-ISM pH Yes Glass BNC + RCA (Cinch) 1.8 0 £237.00
Special Offer
Mettler Toledo InLab Solids Pro-ISM pH Yes Glass BNC 0 0 £237.00
Special Offer
Mettler Toledo InLab Viscous pH Yes Glass BNC 0 0 £241.25
Special Offer
Mettler Toledo InLab Expert Go-5m-ISM pH Yes PEEK BNC + RCA (Cinch) 5 0 £249.74
Special Offer
Mettler Toledo InLab Science Pro-ISM pH Yes Glass BNC 0 0 £263.91
Special Offer
Mettler Toledo InLab Expert Go-10m-ISM pH Yes PEEK BNC + RCA (Cinch) 10 0 £266.04
Special Offer
Mettler Toledo InLab Micro Pro-ISM pH Yes Glass BNC 0 0 £268.39
Special Offer
Mettler Toledo InLab Pure Pro-ISM pH Yes Glass BNC 0 0 £268.89
Special Offer
Hanna Instruments HI-1083B pH No Glass BNC 1 6 £291.91
Special Offer
Mettler Toledo InLab Power Pro-ISM pH Yes Glass BNC 0 0 £294.62
Special Offer
Mettler Toledo InLab Viscous Pro-ISM pH Yes Glass BNC 0 0 £302.40
Special Offer
Mettler Toledo InLab Nano pH No Steel BNC 1 0 £375.51
Special Offer
Hanna Instruments HI-1083P pH No Glass BNC + pin 1 6 £428.26
Special Offer
Mettler Toledo InLab Smart Pro-ISM pH Yes Glass BNC 0 0 £441.12


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  • Mettler Toledo electrodes from Wolflabs

    Mettler Toledo electrodes from Wolflabs

    Product update

    Introduction
    Mettler Toledo LE410 electrode from Wolflabs. 3-in-1 glass pH electrode for simple and rapid measurements in the laboratory, aqueous samples such as acids, bases etc.; refillable electrolyte.

    Features and benefits
    - Fast measurement in aqueous solution
    - Integrated temperature probe
    - Refillable reference electrolyte

    Product category Manufacturer Wolf Staff Date
    Electrodes Mettler Toledo David Suddaby 10-Mar-2018
  • Hanna Instruments electrode from Wolflabs

    Hanna Instruments electrode from Wolflabs

    Product update

    Introduction
    Hanna Instruments HI-12302 electrode from Wolflabs. Ideal for field and educational use, the revolutionary Hanna HALO electrode transmits the pH and temperature values via Bluetooth to your phone or tablet using the free to download Hanna Lab App.

    Features and benefits
    - Connects to HALO electrodes via Bluetooth Smart Technology (Bluetooth 4.0)
    - One press connect
    - Status indicator
    - Easy-to-replace battery
    - Up to five-point pH calibration with seven standard pH buffers available
    - Displays pH and temperature updated every second
    - Displays date and time of current calibration, probe offset and average slope along with calibrated buffers, mV values, temperature and slopes between each buffer

    Product category Manufacturer Wolf Staff Date
    Electrodes Hanna Instruments David Suddaby 10-Jan-2018
  • Hanna Instruments electrode from Wolflabs

    Hanna Instruments electrode from Wolflabs

    Product update

    Introduction
    Hanna Instruments HI-11312 Halo electrode from Wolflabs. Halo is a high quality, double junction, refillable glass pH probe with a built-in temperature sensor. Its flexibility and ease of use means that it can be used virtually anywhere in the field, laboratory or classroom.

    Features and benefits
    - Refillable glass pH electrode. 
    - Double junction reference design.
    - Integrated temperature sensor ensures the calibratoin and measurement is automatically temperature compensated to elimiate error. 
    - Wide pH (0-13) and temperature (-5 to 80°C) ranges.
    - Data is wirelessly transmitted to an iPad running the Hanna Lab App via Bluetooth Smart technology. Halo 500 hours of battery life.
    - One button sample tagging pressing either the button on the Halo pH probe or the probe icon in the Hanna Lab App will tag sample data for easy reference.
    - Calibration is stored Halo stores calibration information; no aditional calibraiton is needed when switching to another iPad.
    - Battery condition the measurement screen of the Hanna Lab App displays the name, battery life and condition of the Halo probe.

    Product category Manufacturer Wolf Staff Date
    Electrodes Hanna Instruments David Suddaby 01-Dec-2017
  • Hanna Instruments electrode from Wolflabs

    Hanna Instruments electrode from Wolflabs

    Product update

    Introduction
    Hanna Instruments HI-11102 electrode from Wolflabs. Ideal for laboratory use, the revolutionary Hanna HALO electrode transmits the pH and temperature values via Bluetooth to your phone or tablet using the free to download Hanna Lab App.

    Features and benefits
    Connects to HALO via Bluetooth 4.0
    - Up to five-point pH calibration with seven standard pH buffers available
    - Calibration reminder
    - pH and temperature updated every second
    - Basic and full GLP
    - Fluid, dynamic graphing
    - Measurement alarms Alerts you if the measurement threshold is exceeded
    - One button sample tagging
    - Data-logging with custom annotations
    - Share data via email in CSV format

    Product category Manufacturer Wolf Staff Date
    Electrodes Hanna Instruments David Suddaby 01-Oct-2017
  • Hanna Instruments electrode from Wolflabs

    Hanna Instruments electrode from Wolflabs

    Product update

    Introduction
    Hanna Instruments FC200B electrode from Wolflabs. 

    Features and benefits
    - The FC200B electrode is recommended for use with dairy products such as milk, yogurt and soft cheese in addition to other semi-solid food stuffs.
    - The main body of the electrode is covered in white Kynar (a type of PTFE) which is both easy to clean and food safe.
    - This electrode is ideal for semi solid food applications, milk, yogurt, dairy products.
    - The open junction design consists of a solid gel interface (viscolene) between the sample and internal Ag/AgCl reference. This interface not only prevents silver from entering the sample, but also makes it impermeable to clogging, resulting in a fast response and stable readings.

    Product category Manufacturer Wolf Staff Date
    Electrodes Hanna Instruments David Suddaby 01-Sep-2017
  • Mettler Toledo electrodes from Wolflabs

    Mettler Toledo electrodes from Wolflabs

    Product update

    Introduction
    Mettler Toledo InLab electrodes from Wolflabs. The manufacturing of high quality sensors with outstanding performance not only requires technical skills and expertise but also a profound understanding of the various customer applications and their specific requirements. Mettler Toledo has built up an enormous treasure trove of experience and knowledge over the last decades, which has resulted in a complete sensor portfolio that supports any of your applications.

    Features and benefits
    - Measurements have to be fast, precise and reproducible. Tried and trusted technologies combined with state-of-the-art production processes guarantee highest performance for every InLab sensor, providing reliable results at any time.
    - All InLab sensors are shipped ready to use. Everything you need for your measurement comes together with the sensor. Your work in the lab will be simplified by application specific sensors, automatic recognition of ISM sensors and the spillfree wetting cap.
    - The thought-out InLab sensor construction as well as the highquality materials used for manufacturing guarantee high robustness even in harsh applications. The versatile sensor portfolio ensures the perfectly suited sensor for every application, a match that greatly extends the lifetime of the products.

    Product category Manufacturer Wolf Staff Date
    Electrodes Mettler Toledo David Suddaby 20-Jul-2017
  • New Sentek electrodes from Wolflabs

    New Sentek electrodes from Wolflabs

    Product update

    New P and ISE series of electrodes from Sentek have been added.

    Product category Manufacturer Wolf Staff Date
    Electrodes Sentek Limited David Suddaby 25-Jun-2017
  • New Mettler Toledo electrodes from Wolflabs

    New Mettler Toledo electrodes from Wolflabs

    Product update

    New LE series and InLab series of electrodes from Mettler Toledo have been added.

    Product category Manufacturer Wolf Staff Date
    Electrodes Mettler Toledo David Suddaby 25-May-2017
  • Hanna Instruments electrode from Wolflabs

    Hanna Instruments electrode from Wolflabs

    Product update

    Introduction
    Hanna Instruments HI-12300 electrode from Wolflabs. The HI-12300 is a smart pH electrode for use with the HI-2020 Edge hybrid meter.

    Features and benefits
    - This electrode features a built-in microchip that stores sensor type, ID, and calibration information that is automatically retrieved by Edge once the electrode is plugged in.
    - Stored pH calibration information includes: calibrated buffers, date, time, offset and slope characteristics of the electrode.
    - The HI-12300 features an easy to plug in 3.5mm connector and is recommended for use in field applications.

    Product category Manufacturer Wolf Staff Date
    Electrodes Hanna Instruments David Suddaby 01-May-2017
  • Hanna Instruments electrode from Wolflabs

    Hanna Instruments electrode from Wolflabs

    Product update

    Introduction
    Hanna Instruments HI-1230B electrode from Wolflabs. The HI-1230B is a PEI body, double junction pH electrode with a BNC connector. This electrode has a single ceramic junction in the outer reference cell and the spherical pH sensing portion is made with general purpose glass and is protected by an extension of the durable PEI body.

    Features and benefits
    - General Purpose (GP) glass, as the name implies, is a standard glass formulation that is used for general use. A pH electrode with GP glass will have a resistance of 100 megaohms at 25°C and is suited for measuring pH of samples that are at ambient temperatures. The HI-1230B is suitable to use with samples that measure from 0 to 70°C.
    - The spherical bulb is for general purpose use. Other tip shapes include conic for penetration and flat tip for surface measurements.
    - The body of the HI-1230B is composed of polyetherimide (PEI) resin. The PEI body is suitable for a wide range of applications and excels in field measurements due to its durability. The shielding around the spherical glass tip minimizes breakage due to accidental bumping or dropping of the electrode. The PEI plastic is a high quality plastic that is chemically resistant to many aggressive chemicals.
    - A double junction electrode has an internal compartment surrounding the reference wire. Silver ions are present in the electrolyte of the internal compartment, which houses the Ag/AgCl reference wire; the electrolyte outside this compartment is silver free. The double junction design means that virtually no silver from the electrode enters the sample. This design allows measurement in applications where silver ions in the sample are undesirable or silver precipitates on the junction are likely to form.
    - The HI-1230B uses a BNC connector. This type of connector is universal in that it can be used on any pH meter that has the female BNC probe input. 

    Product category Manufacturer Wolf Staff Date
    Electrodes Hanna Instruments David Suddaby 06-Feb-2017

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FAQs - Electrodes

How should I clean my electrode?
A clean electrode bulb will have a total surface pH of 7. If an area of the bulb is dirty this will effect the average pH reading. Use a cleaning solution to keep your electrode in the best condition. Different types of cleaning solutions are available for different applications. To remove proteins of sample deposits, soak in cleaning solution for 1-2 hours. If working with food or blood products store the electrodes over-night in cleaning solution. Do not wipe your electrode as this creates static charge and could leave scratches, always clean by rinsing.

How should I prepare my electrode for use?
Carefully remove the electrode from the packaging and remove the protective rubber or plastic protective “boot” from the tip. Some plastics can leave deposits on the sensing tip which will result in a slow response. Every effort is made to make sure this does not happen, but if you suspect this, then wipe the tip with a tissue soaked in propanol or soak the electrode in cleaning solution for an hour.

How do I store my electrode?
Make sure your electrode hydrated by keeping it in storage solution or a buffer solution of pH 4.01 or pH 7.01, ensuring the bulb and junction is fully submerged in the storage solution. Do not store it in distilled or deionised water.

How long will my electrode last?
This is application dependant. Using in clean water based samples will result in a lifetime of years. Food products will result in a shorter life of around 6 months if cleaned properly. Aggressive chemicals and processes vary quite a lot, but electrodes should have a consistent lifetime.

How do I tell if my electrode need replacing?
Set your instrument to absolute mV mode and place the electrode om pH7 buffer. If the reading is greater than ± 30mV, then the electrode may be getting towards the end of its life. When calibrating between 7 and 4 pH buffers a new electrode should have a slope greater than 95%. If this reading is less than 90%, the electrode may need replacing. (Soaking in cleaning solution may help). Regular inspection of your electrode helps to keep the response time of readings up, reduces the risks of your electrode failing and becoming damaged from use. Calibrate your electrode regularly as part of inspection. e.g. if you are using your electrode for 20 measurements a day, calibrate daily, or if you are using the electrode weekly make sure it is calibrated monthly. Or calibrate the electrode when your see a result you weren't expecting.

How can I get the best results from my refillable electrode?
Always keep the electrolyte level full and open or loosen the fill hole cap when in use to get the quickest results.