Tadeto Soil pH Tester, High Accuracy Digital pH Meter for Soil, Garden, Water, Plants, Solution and Food, Soil pH Test Kit with Thermometer LCD Display, Calibration Powder and Alloy Protective Cap

High end and extremely accurate pH sensor. If you’re serious about gardening you need one. It’s a bit more complex than most but it will give you the best results

A professional piece of equipment. Take your time, set it up and calibrate properly and you can trust this little beauty.

I wanted to like this meter, but unfortunately, mine has a firmware or display defect that makes it impossible to trust. The Problem: According to the manual, during calibration the meter should display: CAL1: 4.01 CAL2: 7.00 CAL3: 10.01 However, my unit shows: CAL1: 4.1 (not 4.01 or even 4.0) CAL2: 6.7 (not 7.00 or 6.9) CAL3: Correct This is not a rounding issue—4.01 rounds to 4.0, and 6.86 (if using NIST standard) rounds to 6.9. The numbers displayed do not match any standard buffer table or the manual. Why It Matters: Even if the actual measurements are accurate, the calibration prompts are wrong. You should not have to guess whether to trust the screen or the solution. A pH meter needs to be reliable, and this one isn’t right out of the box. Verdict: Defective unit or badly design firmware. I am returning it.

I purchased this meter to help me really dial in my cannabis garden. I wasn’t having any problems, but having another tool at hand couldn’t hurt. I received the meter and after unpacking I calibrated it. Fairly easy to do, instructions were a little confusing at first but figured it out quickly. The readout on the meter was not working properly, did not show complete numbers . Only half of the screen showed numbers. Took out the batteries, reinserted them, pushing buttons at random, no go to get it working properly. Sent it back, and 5 days later I received a new one. This one worked great. Readout works, holds its calibration pretty well and is nice and durable. I’m not sure how precise this meter is quite yet, but am working on that right now. But seems fairly accurate. All in all, I’m pleased with the meter and would recommend it.

After using Oakton for a couple of decades which were perfect, plus one or two Hannah ones that were junk, I was very impressed by this Tadeto which ticked all the boxes for me, price, 3 pt calibration, back light, large display, screw tight cap that hold storage solution, a few pouches of calibration crystals, and basically waterproof. My unit was dead on accurate out of the box just like someone else mentioned, and it came with the cap full of storage solution to keep the probe in perfect condition (unlike Oakton). The soil probe/guard was a terrific addition for people who really want to know what's happening in their soil. It turns out in California with all the calcium carbonate in the municipal water supply that my 8.3 pH tap water was leaving my soil up around 7.5 pH, not good. I watered a few times with Neptune's Harvest fish hydrolysate which brought things back down closer to 6.0, and the plants loved it. The value here is tremendous.

I purchased this pH probe along with the BlueLab PENSOILPH and Apera AI102G . In side by side testing this probe is as good or better than the BlueLab and Apera at a fraction of the cost. Way to go Tadeto! I sent the other two back. Drift after one month of calibration has only been 0.1 pH unit. Anyone complaining about this probe either received a defective unit or has no experience with pH probes. In the majority of negative reviews, I suspect the latter. I on the other hand, have worked extensively in biomedical labs and understand these probes well. I'm not going waste your time and mine giving a tutorial. Suffice to say, if you know what you are doing this probe is a bargain! Something like this 20 years ago would have sold for over $1000.

Works Bentham my Bluelab which shocked me

I purchased this device in May of 2025. I use this in my worm farm. So far so good. Is it accurate? My worms are thriving and doing well.

Bon rapport qualité prix. En entrée de gamme (Moyenne ?) il est parfait.

Tolles Gerät! Das Tadeto PH-Meter kommt bereits kalibriert an und ist sofort einsatzbereit, Batterien sind drin und aktiv. Die beigefügte Schutzkappe für Erde ist massiv und schützt wirklich. Erste Versuche zeigen ein hohe Empfindlichkeit und immer wieder reproduzierbare Messergebnisse. Ich würde fertige Kalibrierlösung im passenden PH-Bereich und die auf jeden Fall benötigte KLC-Aufbewahrungs-Lösung mit bestellen. Dann steht jahrelangen exakten Messungen nichts im Wege - Stand heute. Die mitgelieferten Pülverchen zu Herstellung von Kalibrierlösung sind ohne Feinwaage und Rein-Wasser kaum verwendbar. Ebenso das KCL-Pulver. Die Aufbewahrungs-Tasche ist (war) sofort kaputt, Reißverschluss nicht vernäht. Diese Sachen sind nicht Bestandteil meiner Sternebewertung, das würde das Gerät deutlich schlechter aussehen lassen als es ist. Wie vermutet sind meine drei Ph-Meter-Schätzeisen (Kaupreis 10 - 27,00€ pro Stück) für die Tonne. Abweichungen bis zu einem PH-Punkt, je organischer der Boden, je höher der Fehl-Wert Fazit: Auch wenns teuer erscheint, lieber gleich was taugliches oder schätzen und dann Mangelerscheinungen behandeln, aber dafür braucht man kein Gerät Achso! Die Bedienungsanleitung ist in klar verständlichem Deutsch geschrieben.

El medidor va muy bien, llega bien empaquetado y no uno, sino dos sobre por cada solución de calibración! Estoy muy contento con la compra

Cercavo un pH di qualità migliore rispetto alle solite cinesate e devo dire che funziona molto bene

Perfecto solo una pega deberian existir repuestos para el aparato