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Bluelab® pH Pen
Bluelab® pH Pen
Bluelab® pH Pen
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Bluelab® pH Pen

Marsoni M251S
Sale price$116.00
Pay 4 payments of $29.00 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Bluelab® pH PenMeasures pH and temperature. Selectable units for C and F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration indicator. Hold reading function and low battery warning. Fully waterproof with auto off function. Automatic temperature compensation. Along with Bluelab pH Probe KCI Solution, Bluelab pH 7 and Bluelab pH 4 Solution Sachets are now included. Range: 0. 014. 0 pH 050C 32122F. Resolution: 0. 1 pH 1C 1F. Accuracy
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  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 715 reviews
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Product Reviews
M
Verified Purchase
Mathew
New York, US
★★★★★ 5
Great product !!!
Size: 8.8" x 9.3" x 1.2"
The product was in great shape when delivered. Even though the package was thin as it is the delivery was made with card and all was well with product. The instructions were good to use and change in my car. Also it showed the make of vehicle so I won’t be confused at all. Overall it was a great buy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 5
Fits my Accord perfectly!
Size: 8.8" x 9.3" x 1.2"
Fits my 2008 Accord perfectly and feels just as sturdy as the OEM I used before, which cost nearly twice as much. Plus, it includes activated carbon, something the OEM didn’t have.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
S
Verified Purchase
Susan F. Montville
Los Angeles, US
★★★★★ 5
Easy to do it yourself and save!
Size: 8.8" x 9.3" x 1.2"
One place wanted $85 to replace this! Another wanted $50! I ordered this for $10, watched a YouTube video and did it myself! Super easy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
T
Verified Purchase
T. N.
Dallas, US
★★★★★ 5
Buy it, worth it.
Size: 8.8" x 9.3" x 1.2"
Good quality product. Easy to use and install. Worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2026
M
Verified Purchase
Madfire Ink
Boise, US
★★★★★ 5
Amazing
Fit as directed for my wifes 1998 ford explorer sport and worked as described.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

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