Promotional price valid on web orders only. Your contract pricing may differ. Interested in signing up for a dedicated account number?
Learn More

Oakton™ Replacement Sensor for Oakton™ Double-Junction Waterproof pHTestr™

Replaceable sensor saves money by reusing the same meter body

Catalog No. S65290

This item has been discontinued and is no longer available. Please call customer service for assistance: 1-800-766-7000.



For use with Oakton Double-Junction Waterproof pHTestr, Waterproof Big Display pH Testr 20, Waterproof Big Display pH Testr 10.

Double-Junction Waterproof pHTestr

  • Waterproof instrument designed for significantly longer electrode life
  • Unique double-junction electrode design
  • Increased reference gel volume
  • Replaceable sensor saves money by reusing the same meter body
  • Microprocessor based with auto-buffer recognition
  • Use in lab applications where solvents, chemicals, or biological materials make ordinary testers impractical
  • Waterproof, dustproof housing is great for outdoor measurements
  • Compact size for easy testing anywhere
  • Thermoplastic body offers good chemical compatibility

  • pHTestr 2 and pHTestr 3+ feature Automatic Temperature Compensation (ATC)
  • pHTestr 3+ also provides temperature readout (0° to 50°C)
pH Range:
  • pHTestr 1: -1.0 to 15.0
  • pHTestr 2: -1.0 to 15.0
  • pHTestr 3+: 0.00 to 14.99





Product Certifications


Provide Content Correction

We continue to work to improve your shopping experience and your feedback regarding this content is very important to us. Please use the form below to provide feedback related to the content on this product.

Product Title

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.

Cancel Submit