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Electrodes consist of different materials (very frequent: platinum, calomel or hydrogene electrodes) and are hence applicable multi-purposely: to determine the pH value, the so-called single-rod measuring cells are used. Yet, the standard hydrogene electrode serves as reference electrode determining the standard potential of redox pairs. Most frequent are the solid state electrodes containing of a metal and its dilution. Yet, also liquid electrodes such as quicksilver electrodes are possible. 

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Electrodes

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  1. WTW

    pH-combination electrode SenTix 41 with integrated temperature sensor

    Regular Price: €193.00

    Special Price €183.35

    SKU: WW103635
    In Stock
  2. Mettler-Toledo

    pH electrode LE438 (plastic, 3-in-1)

    €151.00
    SKU: MR51340242
    In Stock
  3. WTW

    SenTix 22 basic pH combination electrode

    €122.00
    SKU: WW103633
    In Stock
  4. WTW

    SenTix 61 standard pH combination electrode

    €141.00
    SKU: WW103640
    In Stock
  5. WTW

    SenTix H precision pH combination electrode

    €222.00
    SKU: WW103644
    In Stock
  6. WTW

    SenTix Sp Spear-type pH-combination electrode

    Regular Price: €276.00

    Special Price €262.20

    SKU: WW103645
  7. WTW

    SenTix Sur surface pH combination electrode

    €229.00
    SKU: WW103646
    In Stock
  8. WTW

    SenTix V pH electrode

    €122.00
    SKU: WW103690
  9. WTW

    SenTix 940 combined pH sensor, digital

    €219.00
    SKU: WW103740
    In Stock
  10. WTW

    R 503/D Reference electrode

    €457.70
    SKU: WW106571
    In Stock
  11. WTW

    Oxygen sensor (galvanic) CellOx 325

    €809.00
    SKU: WW201533
    In Stock
  12. WTW

    WP 90/3 3 exchange membrane heads

    €135.00
    SKU: WW202725
    In Stock
  13. WTW

    Conductivity electrode TetraCon 325

    €433.00
    SKU: WW301960
    In Stock
  14. WTW

    SenTix® 940 -3 combined pH sensor, digital

    €244.00
    SKU: WW103741
    In Stock
  15. Mettler-Toledo

    pH combination electrode InLab Routine Pro

    €223.00
    SKU: MR51343054
    In Stock
  16. Mettler-Toledo

    pH combination electrode InLab Solids

    €254.00
    SKU: MR51343153
    In Stock
  17. WTW

    pH-Einstabmeßkette Sensolyt

    €241.00
    SKU: WW109115
    In Stock
  18. Mettler-Toledo

    pH-Elektrode InLab Solids Pro IP67

    €340.00
    SKU: MR51343156
  19. Mettler-Toledo

    pH-Gerät FiveEasy, Tischgerät (Entry-Level)

    €418.00
    SKU: MR30266658
  20. Mettler-Toledo

    pH combination electrode InLab Easy

    €92.00
    SKU: MR51343010
  21. Mettler-Toledo

    pH combination electrode InLab Routine

    €151.00
    SKU: MR51343050
  22. Mettler-Toledo

    pH combination electrode InLab Routine Pt1000

    €223.00
    SKU: MR51343056
  23. Mettler-Toledo

    pH combination electrode InLab Science

    €219.00
    SKU: MR51343070
    In Stock
  24. Mettler-Toledo

    pH combination electrode InLab Routine Expert

    €141.00
    SKU: MR51343100
  25. Mettler-Toledo

    pH combination electrode InLab Routine Expert Pro

    €229.00
    SKU: MR51343101
  26. Mettler-Toledo

    LE408 LE408 LE408

    €103.00
    SKU: MR51340347
  27. Mettler-Toledo

    pH electrode LE407 (plastic, gel

    €76.90
    SKU: MR51340330
  28. Mettler-Toledo

    InLab® Ultra Micro-ISM

    €305.00
    SKU: MR30244732
  29. WTW

    pH combination electrode SenTix 41-3

    €227.00
    SKU: WW103636
    In Stock
  30. WTW

    SenTix ORP ORP combination electrode

    €193.00
    SKU: WW103648
    In Stock
  31. WTW

    SenTix HW precision pH combination electrode

    €227.00
    SKU: WW103650
    In Stock
  32. WTW

    SenTix Mic-D combined pH-electrode

    €283.00
    SKU: WW103660
  33. WTW

    SenTix HWD pH electrode

    €320.00
    SKU: WW103731
  34. WTW

    WP3-ST 3 exchange membrane heads

    €141.00
    SKU: WW202738
  35. WTW

    SenTix® 945-P

    €256.00
    SKU: WW103764
  36. WTW

    SenTix® HW-T 900-P

    €267.00
    SKU: WW103767
  37. Mettler-Toledo

    pH electrode LE427 (plastic spear tip)

    €163.00
    SKU: MR51340333
  38. Mettler-Toledo

    pH electrode LE427-S7 (plastic spear

    €135.00
    SKU: MR51340334
  39. Mettler-Toledo

    LE407-DIN pH electrode, 1.0 m cable, DIN

    €76.30
    SKU: MR51340341
  40. Mettler-Toledo

    LE409-DIN pH electrode with glass shaft,

    €93.40
    SKU: MR51340343
  41. Mettler-Toledo

    LE420-DIN pH Electrode with PTFE sleeve,

    €141.00
    SKU: MR51340345
  42. Mettler-Toledo

    LE438-DIN pH Electrode with Pt1000

    €149.00
    SKU: MR51340346
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Generally speaking, electrodes are electron conductors which absorb or deliver those from a medium or to it (an electrolyt solution). They always have a positive pole (anode) and a negative Pole (cathode), between them electrodes are flowing. Hence, it comes to an electrochemical transformation.