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Triplett WQ125 replacement electrode with flat waterproof tip for WQ120 pen

TRIPLETT - TOOLS & METERS

TRIPLETT WQ125 pH EC TDS Salinity Electrode for WQ120 Pen

SKU CH-MF1J-1H4X9

A replacement probe measures pH, conductivity, total dissolved solids and salinity for the WQ120 pen with a waterproof flat-surface tip

  • Measures pH, EC, TDS and salinity with one probe
  • Waterproof flat-surface electrode resists fouling in wet conditions
  • Polycarbonate body withstands industrial and sanitary environments
  • Four-inch probe reaches into tanks and narrow openings
  • Direct replacement electrode restores WQ120 pen to full function

Compatible Electrode for WQ120 Pen

The TRIPLETT WQ125 electrode is designed specifically for the WQ120 pH, TDS, conductivity and salinity pen. It provides a direct replacement probe for professionals who need to maintain accurate water-quality readings in industrial or sanitary environments.

Single Probe with Four-Inch Reach

One polycarbonate probe extends four inches into the sample, giving sufficient depth for routine testing of tanks, pipes or process streams. The flat-surface sensing element measures pH, EC, TDS and salinity until the glass membrane ages or the reference junction fouls, at which point the electrode must be replaced.

Waterproof Flat-Surface Design

The waterproof, flat-surface construction allows the probe to be rinsed under running water and used on flat or curved surfaces without trapping air bubbles. This design reduces cleaning time between samples and helps maintain consistent contact for reliable salinity and pH measurements.

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Price $57.99
Typical for this category: the median of 734 items is $60.99.

Specifications

Product
Brand nameTRIPLETT

Questions about this item

Will the 4 in probe on this WQ125 electrode reach the same test points as the original sensor on my WQ120 pen?

Yes, the 4 in probe length matches the original design so it fits the same sample depths and containers you already use with the WQ120 pen.

How can I confirm the flat surface electrode is reading pH correctly after I attach it to the WQ120?

Dip the electrode in a known pH buffer solution and verify the WQ120 displays the expected value; the waterproof flat surface design gives stable contact for reliable confirmation.

Does the WQ125 package include calibration solutions or do I need to buy them separately?

The electrode ships as a single probe only; calibration buffers for pH, EC, TDS and salinity must be purchased separately.

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