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

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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Oct 10
Order within 8 hours and 37 minutes
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Style: Combo Kit


Features

  • The top-rated pH tester now comes with a complete CALIBRATION and PROBE CARE Combo Kit, ensuring reliable test performance
  • Comes with a probe cleaning brush for easy removal of contaminants on probes, maximizing probe's life-span
  • Comes with Apera's unique CalBox, heping you organize all the solutions and save cost on buffers by at least 50%
  • Apera quality pH sensor with low impedance, greatly improving response speed and shorteninb stablizing process
  • Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122 F)

Description

"The top-rated pH tester on Amazon now comes with a complete calibration and probe care combo kit, including 3 bottles of 8oz pH calibration solutions (pH 7, 4 & 10), one 4oz 3M KCL storage solution, a probe cleaning brush, and Apera's unique CallBox for organizing all the solutions and efficient use of buffer solutions (help you save the cost on buffers by at least 50%). Performing pH calibration in fresh and clean calibration solutions regularly is critical to the reliable performance of pH meters. As a rule of thumb, we recommend calibrating your pH meter at least once a week. And each batch of calibration solutions should be replaced after 10-15 times of calibration. With Apera's Callbox and 8oz calibration solutions, users can perform up to 150 times of calibration. The probe cleaning brush that comes with the kit can help you easily remove contaminants on the glass bulb sensor without any damage, maximizing the life span of your pH probe.The PH20 Value pH Tester is designed for all kinds of regular water solutions pH test, including hydroponics, pools and spas, water treatment, aquariums, aquaculture, beer brewing, winemaking, cooling towers, etc. Up to 3 points of auto. calibration and 0 to 50˚C Auto temperature compensation (ATC), ±0.1 pH Accuracy with 0 to 14.0 pH measuring range; auto. recognition and auto. indication of stable readings saves you the trouble of guessing when to manually hold measurement. With a clear large screen, it supports dual display of Temp./pH value and indicators of completed calibrations (where L/M/H indicate 3 points of calibrations) and stable readings (with a smiley face). Smart self-diagnosis, warning of out-of-range measurement and incorrect calibrations. IP67 waterproof and dustproof. Up to 2000 hours' continuous operation powered by AAA batteries (with low power warning and Auto power off in 8 min if no operation). 6-Month on the the probe. "

Product Dimensions: ‎7 x 1.6 x 1.2 inches


Item Weight: ‎3.3 pounds


Manufacturer: ‎Apera Instruments


Item model number: ‎AI209-T


Batteries: ‎4 AAA batteries required. (included)


Date First Available: ‎December 7, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Accurate. Worth every penny @
Style: Combo Kit
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! ... show more
Reviewed in the United States on September 10, 2023 by Mr. Persnickety

  • Aquarium and House Plant -- Water Testing
Style: Combo Kit
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. ... show more
Reviewed in the United States on December 22, 2025 by Paul

  • Works great!
Style: Combo Kit
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. ... show more
Reviewed in the United States on September 17, 2026 by Mojo Maverick

  • Better Than Cheaper Types For Hydroponics
Style: Combo Kit
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. ... show more
Reviewed in the United States on September 12, 2026 by Stwain

  • This pH tester is quality and reasonable price.
Style: Combo Kit
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.
Reviewed in the United States on June 26, 2025 by A-N

  • Easy to use!!
Style: Combo Kit
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. 😎
Reviewed in the United States on April 30, 2025 by BikerHippie71

  • High quality COMPLETE kit!
Style: Combo Kit
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! ... show more
Reviewed in the United States on August 11, 2020 by Jacob Palm

  • Accurate and easy to use
Style: Combo Kit
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. ... show more
Reviewed in the United States on September 5, 2024 by Walter

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