The Oakton WD-35805-05 is a single-junction, 12-mm, standard pH electrode, gel-filled, sealed, epoxy body, and 0-14 pH range. The electrode, also known as a probe, measures the pH of a solution. It is commonly used for fi...

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The Oakton WD-35805-05 is a single-junction, 12-mm, standard pH electrode, gel-filled, sealed, epoxy body, and 0-14 pH range. The electrode, also known as a probe, measures the pH of a solution. It is commonly used for field use, clean water, and high sodium/high pH applications. It has a single junction for general-purpose applications, and an epoxy body for impact resistance and durability. It has a standard type electrode for wide variety of applications. The electrode houses a gel-filled electrolyte, inside of its reference chamber to enhance performance. It has a BNC-connected combination reference and measuring cell, for ease of use and to provide tight coaxial cable connections.

The 35805-05 electrode has a temperature range of 0 to 80 degrees C (32 to 176 degrees F). Its dimensions are 12 (d) x 110 (l) mm, and it is intended for use with the Oakton pH Testr BNC, pH 5/6, Ion 6, pH 5+/6+, Ion 6+, pH 10/11/100/110, pH 300/310, pH 500/510, Ion 510, pH 1000/1100/2100/2500, pH700/2700, Ion 700/2700, PC 700/2700, pH/DO 300, pH/CON 300, pH/CON 510, pH 600/610/620, PC600, PD600, PDC650, and other meters with BNC-connected electrodes (sold separately). It comes with a protective electrode storage container to prevent damage, and a 3-foot cable.

pH testers measure the acidity or alkalinity of a substance and are commonly used by researchers, manufacturers, and hobbyists in hydroponics, aquaculture, agriculture, and wine-making.

Oakton Instruments manufactures an array of scientific instruments for research, industrial, and educational uses. Since 1991, Oakton has distributed a wide variety of instruments such as meters, electrodes, and transmitters. Oakton is based in Vernon Hills, IL, and has facilities in Europe, Asia, and China.

What’s in the Box?

  • One electrode WD-35805-05
  • One 3-foot cable
  • Electrode storage container
  • BNC connector


  • Single-junction electrode for general-purpose applications
  • Epoxy body for impact resistance and durability
  • Sealed body for low maintenance use
  • Gel-filled electrolyte to enhance performance
  • Bayonet Neill-Concelman (BNC)-connected combination reference and measuring cell, for ease of use and to provide tight coaxial cable connections
  • Single-junction electrode for general-purpose applications
  • Epoxy body for impact resistance and durability
  • Sealed body for low maintenance use
  • Gel-filled electrolyte to enhance performance
  • Bayonet Neill-Concelman (BNC)-connected combination reference and measuring cell, for ease of use and to provide tight coaxial cable connections

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