Bluelab PROBPH pH Probe, Replacement Probe with BNC Fitting, Easy Calibration

Product works.

The product is highly accurate, BUT although I do store mine properly in PH storage solution, over time they seem to slow down...a lot! The last one I had was starting to take over 10 minutes to show an accurate number and when waiting to adjust with PH+- then as you can imagine, it can extend to over an hour, which isn't good at all. However, brand new out of the box for roughly 6 months to a year, these are spot on, quick and accurate.

Sensorn var torr och det får den inte vara.

Très déçu, calibrage avec des liquides neufs, Ph ok 100%, ph 4 50%. Dégoûté pour un produit neuf

top macht was es soll

I have been using bluelab products for over eight years. Highly accurate but priced a bit steep for many ordinary gardeners - If you are looking for lab quality and extreme accuracy look no further. All blue lab products that I have tested which include their combo meter, soil ph pen, and the guardian meter have all performed excellent. The ph probes must be kept clean and submerged in a solution (I use tap water that is frequently changed out after each use). To keep the probes lasting you must keep proper maintenance and always be sure to recalibrate one to two times a month for best results. Calibrate in ph 7.0 solution first and follow it up with 4.0 until your ph probe has a check mark in which it should now be perfectly calibrated and accurate. Be careful not to drop your ph probe as they can be fragile that most likely would resulting in accurate readings or cracked glass.

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! AAAAAAAAA+++++++