APERA INSTRUMENTS AI209-T Value Series PH20 pH Tester Combo Kit, Including the Maintenance Set, and a CalPod Solution Holder for Easy Calibration

This is the most I've ever spent on a ph pen. I'm so glad I bought this Apera pen. I have been watching Doctor Bruce Bugbee online (the guy who also is part of Apera instrument company) , and really admire his vast knowledge of certain vegetation. I figured if anyone could make a ph he could. I was pleasantly surprised! It even adjust automatically for temperature . It came in a very sturdy case with three calibration solutions, and solution for keeping the probe submerged in. Also had a 4 vial stand to keep the perfect amount of ph solutions. My vegetables are really reflecting the accuracy of this pen! Just get you one!

The quality of this product is significantly better than the $10 dollar brands. Obtains stable final reading faster and maintains calibration longer. The entire device is water proof. I have accidentally dropped my various meters multiple times fully submerged in water. Finally, the included directions are more informative than the two other cheap brands that I purchased.

Very easy to use. Seems like it will last a long time if properly cared for. Does not leak as long as you store it properly in its vertical position. Storage is fairly easy if you have something around the house to hold it. I use a pencil holder. It would have been nice to have something included for this purpose but it's no big deal. Good value for the money.

Very quick to give accurate readings and easy to use and calibrate. Has helped tremendously with hydroponics as compared to a less accurate meter. I deducted one star because I'm having problems with a connection in the battery compartment that leaves the unit dead and unable to turn on at times. The battery closure does not seem to work correctly, but I finally got it to working again. I'm not confident it will continue to work if I open the battery compartment again. Not sure if it's poor design or a quirky unit.

I brought this in combo kit for food and wine pH test. It reasonable price and accurate as good as my other top name brand I have. Yes I will buy another one again in future from this company.

At first I ordered this, then tried to cancel it. I had found a bluelab pen for cheap, so I figured I'd give it a shot. This order didnt get to cancel, but when it got here, I kept it on presentation alone! The kit is overall GREAT! The PH pen reads within .1 or same of the bluelab pen so I'm not sure which one is even true but theyre both close enough. This kit also came with a storage solution/calibration solution container with snappable lids and i freaking love it. As long as it lasts I'm happy. It seems like it will because the pen came with drops of solution in the cap already to keep it accurate from leaving the factory. "Keep some distilled water in the cap for frequent users" it says in manual so even the instructions are professional. I should have just got this and this alone!

First time user... Love this kit!! Highly recommend!! Fast, simple & accurate 3 points calibration. Excellent video links on the Amazon site & printed direction in the case to help your step right through the he process of calibration and use. 😎

The unit functions great and is accurate. I was disappointed when it stopped calibrating one day, so I read the troubleshooting steps, one of which said to soak it in the 3M KCL storage/soaking solution. I was previously storing it in reverse osmosis water and didn't even realize it came with some KCL storage/soaking solution until I looked through my things. So I soaked in the KCL for a day, and viola, that fixed the issue.

These PH meters are supposed to have water in the cap they must be kept moist. When I received it, it had zero water in the cap. This is why it would not calibrate properly or read properly. I am returning item.

Value is for sure the main factor. I have used it for a few months on a every couple of days basis and it's worked wonders. Only calibrated once upon arrival and once after 50-75 uses. I wish the sensors were replaceable just in case something ever did happen BUT I suppose that's fair due to the price in relation to the next model up. I use mine for plant feeding and I use very little nutrients or additives with reverse osmosis water and I would advise you be patient for the reading and giving it a minute or two to stabilize. I've only needed to do this with reverse osmosis water because of I believe the lack of particles in the water for a more prompt/accurate reading. This is fair and mentioned in the manuals also. In those situations a little shake and wait for it settle is wise. I know it's not due to the meter because before and after reverse osmosis water tests if I put the pen into PH 7.0 test solution it's almost instantly reading exactly 7.0. I love the test rack it comes with because you can reuse sooooo much of the test solutions. As novel as it looks and not of potential value to some but I found it to be of massive value because of the test solution cost savings but furthermore, mostly because the tray is perfectly fitted for the knock of the test pen and holds it in very stable positions. It also feels that it's weighted just right once the chambers have some solutions in the to hold the pen without hight likelihood of a tipping over test pen while in tray. I love the case it came with, very tidy and Profesional. My constructive feedbacks are (aka I wish it could or had this). -Backlight for digital display -Set desired PH target figure or PH desired range figure. Be notified on display or with audio once those set values are reached. More clear instructions on how to store both short term and long term without use to preserve sensors while not in use. Finally a spare washer or two for the pH pen and liquid sample capsule contact around the neck of the pen. (plastic seals can stretch a minute amount during use over time and possibly leak some of the storage solution provide. My only challenge with the order was that my storage solution cap was not well fastened and slowly dripped into the box and almost half the content was unfortunately lost. On a interesting side it appeared as though the solution leaking eventually dried and created a bond to the bottle and prevent added leaks and loss of product. Last but not least the black "fill" to line on the test liquid cup washes off promptly likely due to chemicals being tested. I used a piece of scotch tape to replicate the fill level line without it washing off again and resolved the challenge with ease. Summary, if you are good with unit and gently clean, store it right and be gentle then you have a very reliable, accurate and Profesional grade unit I would highly recommend.

Bought a different unit prior to this one and it would not work properly so I decided to buy this one. It arrived very fast and worked excellent. I was using two different strips for my hot tub an they both gave different readings so I decided to purchase a digital meter and can’t believe the difference. It is so accurate and gives me piece of mind that my ph level is perfect now. Well worth the investment.

After much research, I feel this was a great deal - what with all the accessories, solutions & CalBox. (I love that part.) This is my first pH pen, and is easy to use and learn how to calibrate. The instructions are laminated, and kept handy in the storage box. Couldn't afford the replaceable tip one at the time, but if I ever need to - I wouldn't hesitate to buy another Apera. In fact, I am considering their PPM pen now :)

Excellent pen. Might be out 0.1 after a month of daily use but extremely easy to recalibrate and comes with calibration solution. Save yourself the $30 and get a good ph pen instead of buying the cheap pen than realizing you need a good pen