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BL Bluelab pH Probe

by Bluelab

Was: $129.99
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Make gardening easier with a pH probe - perfect for hydroponic systems.

Keep your plants healthy with a reliable pH probe.

Get accurate readings quickly with a pH probe.

Monitor pH levels with a simple pH probe.

Keep your plants thriving with a pH probe.

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The Bluelab pH Probe is an essential tool for any hydroponic system. It is designed to accurately and reliably measure and monitor the pH of nutrient solutions, helping users to maintain optimal growing conditions for their plants. The probe is easy to use and provides fast, reliable readings in just seconds. It is suitable for use with a range of nutrient solutions, including water-based and soil-based systems. The Bluelab pH Probe includes a calibration solution, which is used to ensure that readings are accurate and stable over time. The probe is also compatible with the Bluelab Guardian Monitor, allowing users to view real-time pH readings on the monitor’s LCD display. The Bluelab pH Probe is the ideal choice for anyone looking for an easy-to-use and reliable way to measure and monitor the pH of their nutrient solutions.

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Product details
Product Dimension: 27.94 x 22.86 x 20.32 cm
Shipping Weight: 2.59 Kg
SKU: 1464

Manufacturer: Bluelab

Date first available: April 11 2016
Average customer review: 4.3 out of 5 stars 796 customer reviews
Bestsellers Rank: #18 in Measuring Device
Customer reviews

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David Flores


Verified Purchase

June 20, 2023

I have an automated growth chamber (not from Bluelab) and was curious if these would be plug and play in the system. Sure enough, they were! I've bought almost 2 dozen for all my different setups, and, aside from minor issues likely related to user error or shipping, every probe has worked well.

Checked each against a separate calibrated meter and found all probes to be fairly accurate as well. Drift was easily corrected by calibration.



Verified Purchase

Not sure if it is possible but it would be nice to have its made a bit more durable

August 14, 2017

Delivery was fast. Product works as advertised, but it is exceptionally delicate. Not sure if it is possible but it would be nice to have its made a bit more durable. You need to ensure you take it out of the reservoir before stirring after putting the PH adjustment product in. I made a case for it out of bubble wrap because the last one I had stopped working after 6 months.



Verified Purchase

Good probe. Good price.

August 19, 2021

The price-point and quality on these pH probes is good. I use these for students who tend to break everything. Rather than risk my fancy $2000 pH meter, I bought bluelab meter for general lab use. This pH probe purchase was to replace one that a student killed =(

Kevin J Morse


Verified Purchase

Not broken, but leaked

January 24, 2023

Boxes were Undamaged, one box previously opened. The fluid required to keep the tips dry have leaked out. One probe was dry, the other had enough in it to keep it damp. I have not been able to get to them to try to ensure they work yet as I am away from home.



Verified Purchase

September 17, 2023

The problem with these probes if 'used' or refurbished is if the probe's been wet and dries out it is DEAD and give you an ERR reading. This came used but the probe was wet in the case- excellent job saved me a ton- thank you!



Verified Purchase


August 29, 2021

It worked beautifully and the price was right! These things are so fragile and I was so worried it would be expensive to replace. Fortunately, they are inexpensive and available. Recommend this seller!

Maxime C.


Verified Purchase

Installed on ista co2 controller

July 03, 2023

I installed this on my aquarium ista co2 controller after breaking my probe. Just needed a quick calibration and this works very well.



Verified Purchase


December 17, 2017

It works, but a device that needs calibration, should come with at least enough solution to do just that. Expensive for what it is.



Verified Purchase


December 01, 2018

It arrived fast ,unbroken and filled with both fluid in the probe and storage cap!



Verified Purchase

Probe came in an open box and was partially falling out of it…

March 31, 2022

Arrived with the box open and the probe partially falling out. Seriously??

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