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

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.

Works Bentham my Bluelab which shocked me

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.

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 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.

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.

I love this device! I am a novice gardener and was struggling to read pH test strips and the cheapo moisture/pH/nutrient meter was not agreeing with the strips at all. I splurged on this meter and it is fantastic so far. Comes with test reference fluid so you know when it says 4, 7, 10 pH, it is absolutely correct. This confirmed that the cheapo meter was WAY off. This also was MUCH easier to read than the pH strips which always show a disagreement between the different color strips so you end up being +/- 1 pH which is a lot when it comes to soil.

Works well when you put the batteries in the right way. The symbols on the unit are a little backwards from what you normally see. So far no issues

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

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

Gutes Produkt! Kam in einer passenden Schutzverpackung an und war vorkalibriert. Habe es mit den beigefügten PH Proben dennoch problemlos kalibriert und habe seitdem gute Ergebnisse. Klare Empfehlung ! Habe es bisher für meine Sauerteige aber auch im Garten für Pflanzen verwendet.

Le pH mètre Tadeto est un outil polyvalent et indispensable pour mesurer avec précision le pH de divers milieux, tels que le sol, les solutions, les aliments et l'eau. Il est idéal pour une utilisation en agriculture, en transformation des aliments, et en industrie pour évaluer la fertilité du sol et maintenir un équilibre acido-basique optimal. Équipé d'un écran LCD rétroéclairé, ce kit permet de lire les données même dans des conditions de faible luminosité. Il dispose également de fonctions de rétention de données et d'alarme pour signaler des environnements fortement acides ou alcalins. La méthode d'étalonnage en trois points garantit une grande précision et une validité scientifique, ce qui en fait un outil fiable pour diverses applications. Le capuchon de protection en alliage protège efficacement la sonde, prolongeant ainsi sa durée de vie et permettant de mesurer facilement des matériaux plus durs. Ce pH mètre est facile à utiliser, même pour les débutants, grâce à son étalonnage simple et ses instructions claires. En résumé, le pH mètre Tadeto combine précision, durabilité et facilité d'utilisation, en faisant un choix parfait pour ceux qui ont besoin d'un outil de mesure fiable et performant.