All Categories
    Menu Close

    pH Electrode for Strong Acid/Alkali/High Temperature

    PTFE pH electrode measuring range 0-14pH, suitable for strong acid, strong alkali, high temperature environment, pH probe measuring data accurately, good corrosion resistance, high quality low noise cable can realize long distance signal transmission.
    SKU: SISCO-PHE-5013A
    i h
    🚚 Free shipping
    🔙 30-day returns
    📅 Delivery: 7-12 days

    The pH electrode is designed with a PTFE shell, which can be used in harsh environments, such as strong acid and alkali. The pH electrode is widely used in industrial wastewater, strong acid and alkali, surface cleaning, and waste gas treatment.

    PTFE pH electrode

    Double-sided stretch

    • Sturdy thick aluminum, made of high quality aluminum.
    • Stable ring, make the leveling rod more stable.
    • Clear scale, able to read clearly.



    pH Electrode is widely used in the continuous testing and monitoring of pH, ORP and temperature in thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food, drinking water, etc.

    pH meter applications

    Model SISCO-PHETE-PH5013A
    Weight 1kg
    Dimension Length: 158mm, diameter: 25.4mm
    Measuring range 0-14pH
    Accuracy 0.02pH
    Temperature range 0-60℃ (32-140℉)
    Temperature compensation * Internal temperature sensor (NTC 10K)
    Zero position 7±0.3pH
    Compressive strength 0.6MPa
    Response time 15s
    Installation size 3/4NPT in both ends
    Shell material PTFE
    Connection Direct lead
    Cable length * 5m/10m/15m, or other length less than 50m (need customization)
    Service life 6 months


    pH electrode installation

    1. Side wall installation (*The pH electrode must be at an angle of 15 degrees to the liquid surface. Otherwise, it will affect the normal use of the pH electrode.)
    2. The flange mounted at the top
    3. Pipe installation
    4. Top installation
    5. Submersible installation
    6. Flow-through installation

    Dimension (unit: mm)

    PTFE pH electrode dimension


    Q1: What is a pH electrode?
    A1: The pH electrode is also called the pH probe pH sensor. The pH electrode is the part of the pH meter that is in contact with the substance to be measured and is used to measure the electrode potential.

    Q2: Why do pH electrodes need to be soaked?
    A2: The pH electrode must be soaked before use, because the pH bulb is a special glass membrane with a thin hydrated gel layer on the surface of the glass 
    membrane, which can only interact with the H+ ions in the solution under fully wet conditions. the response to. At the same time, after soaking the glass 
    electrode, the asymmetric potential can be greatly reduced and tend to be stable.

    Q3: What is a reference electrode?
    A3: An electrode with a known and constant electrode potential that does not respond to the activity of hydrogen ions in solution is called the reference electrode. Reference electrodes include mercurous sulfate electrodes, calomel electrodes, and silver/silver chloride electrodes. The most commonly used are calomel electrodes and silver/silver chloride electrodes. The role of the reference electrode in the measurement cell is to provide and maintain a  fixed reference potential, so the requirements for the reference electrode are that the potential is stable and reproducible, the temperature coefficient is small, and the polarization potential is small when current flows.

    Tips: How to prepare pH buffer solution?

    For general pH measurement, you can use a set of pH buffer reagents (250ml can be prepared). To prepare the solution, use deionized water and boil it for 15~30 minutes in advance to remove the dissolved carbon dioxide. Cut open the plastic bag and pour the reagent into the beaker, make it dissolve with the appropriate amount of deionized water and rinse the bag, then pour it into a 250ml volumetric flask, dilute it to the scale, and trace it well.


    Thank you for buying industrial test and measurement equipment on, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.

    What is covered?

    SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

    What is not covered?

    • Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
    • Expendable parts.
    • Routine cleaning or normal cosmetic and mechanical wear.
    • Damage from misuse, abuse or neglect.
    • Damage from use of parts other than SISCO approved.
    • Damage from use outside the product’s usage or storage parameters.
    • Damage from use of parts not sold by SISCO.
    • Damage from modification or incorporation into other products.
    • Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
    • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
    5.0 2
    Write your own review Close
    Kael | 11/23/2023 1:20 AM
    Chemical Resistance
    The pH electrode's resistance to strong acids and alkalis makes it suitable for applications where conventional electrodes might degrade or provide inaccurate readings.
    adam | 10/31/2023 12:21 AM
    Exceptional Durability
    This pH electrode is built to withstand the harshest of conditions. I exposed it to highly concentrated sulfuric acid and hydrochloric acid solutions, and it showed no signs of degradation. The robust construction and materials used in its design are impressive.