Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration, Double Junction Probe for Improved Accuracy and Durability, White

I dont know how old the one I was given 2nd hand was, I used it for 4 years. when I lost trust in it due to reasons, I purchased this one myself, as in, willing to spend money on it over the cheaper ones... comes with calibration fluid sachets. Great product.

Accurate, easy to use with the bonus of a temperature display. Feels like it's built to last compared to all the others I have wasted my money on. If looked after, I hope it will last for years to come.

Brand new It’s Calibrated But yet gives different readings on the same water. It doesn’t work correctly One dip 5.4 then again a min later 8 then a min later 6.7 Will return

so far so good, didn't look at the reviews before purchasing but the pen is one of the best i've had. works as it should and has been submerged in water with no faults. near instant readings and is just what i was looking for.

trashed a couple of cheap ph meters. The reviews of this one suggest that it is far better value for money it terms of robustness and accuracy

Does exactly what it I suppose to do with great accuracy

Having mostly used cheap ph meters I figured it was time to upgrade. as this was supposedly the best I bought it without hesitation. So after several months of use I can say its accurate but plagued with problems. Sometimes it doesn't turn on, turns itself on all the time when not being used and sometimes just crashes. I definitely expected better for the money paid. There must be a better alternative out there.

Fast and stable read, build quality not on par with EC wand though. Overall I think would have been better to get Apera Instruments PH60 Premium kit as has a replaceable probe and lots more free solutions.

Me gusto, es fácil de calibrar. Te avisa cuando se necesita calibrar, lo único difícil es conseguir el humectador de sonda. Pero de ahí en más es un gran aparato.🤘🏼

2/18/25 Update: BlueLab reached out to me to resolve the issues I was having. They ended up sending me a new pH pen and shared some information on a few things worth considering. My new pen arrived and the storage cap was still moist with storage solution (this is a good thing). The new meter does work better than the original one, but I also suspect that my tap water has "low ionic content" which can cause pH readings to drift (this was also mentioned by BlueLab in their communications with me). I have found that the first readings of the day with the BlueLab pH pen can be a bit low when checking tapwater at my house. If I add nutrients to the water, the pH readings are much more definitive and easy to take. I believe this is to do with the ionic content. I experienced similar behavior with some other, cheaper pH meters. The BlueLab pen reads the calibration solutions quickly and accurately. My advice to anyone new to and/or serious about measuring pH, buy yourself some pH drops (General Hydroponics sells an affordable kit) so you can definitively measure your pH using a visual color matching method and compare to your meter readings. I found that the drops worked the same every single time without error or question or waiting and gave me more confidence in working with electronic pH meters. With some experimenting, I was able to figure out how to get repeatable and accurate readings from the BlueLab pH pen; Sometimes getting a reading of my tapwater that I am confident in takes a few tries. Why get a pen if drops work so well? The color shades when using drops are distinguishable between 6.0 and 6.5 for example, but identifying in between can be difficult to judge. The BlueLab pen gives me 0.1 resolution/accuracy that is needed when doing hydroponic gardening. Having both ways to check pH is ideal. I suspect that pH pens are generally not terribly expensive to manufacture, but it is costly to have a support team available to reach out to communicate with and help customers with their products. Ultimately, BlueLab came through with service, something that is rare these days. I appreciate this and have raised my rating to 5 stars. I really like the BlueLab pen cap, with the sponge that keeps storage solution on the bulb, and the rope used to connect it is also helpful when taking pH samples in a bucket. I do however, wish the the base of the cap was a bit wider so the pen could stand up on its own more reliably. I also wish the meter displayed down to 0.01, not because I need more accuracy, but because I want to see what the current measurement trend is doing (going up/down). The auto off timer also feels a bit short, but I suppose that is both good and bad. 1/10/25 (Original Review) I really wanted to like this expensive PH meter. Sadly It came with a dry probe so I soaked it as directed for 24 hours. Calibrated it 3x with Bluelab 4 and 7 solution but readings would drift for several minutes after each calibration. Tap water would measure at 6.4 right after calibration but leaving the pen in the same sample of tap water the reading would drift up to 7.5 after several minutes. It would never read the same value twice. Just a few minutes after calibration it would read the calibration solution several tenths lower than it should. I bought this expecting accuracy, not games. Returning.

En este caso, la reseña va dirigida al Ph y su importancia en el agua. Sea de acuario, grifo, botella u otro líquido (aquí habría que pasarla por un limpiador o cleaner), si se tiene un sistema de suministro de CO2 en un acuario con sonda fija o no se tiene nada, saber el ph en todo momento es crucial. La sonda ya peca de algo esencial, tres cifras significativas. Pero a cambio te devuelve dos cifras exactas. No hay error. No hay que seguir con líquidos. Y Amazon la tiene a un precio ridículo. Así que, sin más, es la sonda para acuariofilia y otros hobbys o usos que se le quieran dar.

Comoda e precisa

The calibration solutions come in little sachets. Easy to operate.