Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display
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Extended holiday returns
Returnable until Jan 31, 2027 Learn more
Returnable until Jan 31, 2027 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2027
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Availability:
In Stock.
Arrives
Nov 12 – Nov 15
At a glance
- Condition
- New
- Style
- For General Water Solutions
- Model
- AI311
- Dimensions
- 7 x 1.6 x 1.6 in
- Weight
- 10 oz
- Batteries
- 4 AAA batteries required. (included)
Features 7
- NOTE: A few drops of water are added to the electrode cap before the product leaves the factory. This is to maintain the sensitivity of the electrode. Therefore, when you use it for the first time, it is normal to find water droplets in the electrode cap
- Accuracy: 0.01 pH; range: -2.00 to 16.00 pH, 32 to 122 F (0 to 50 C); Auto. Power-Off: 8 minutes without operation
- Easy 1-3 points auto. calibration, recognizes 5 types of solutions (1.68, 4.00, 7.00, 10.01, 12.46); Auto Temp. Compensation (ATC) ensures accuracy in various temperatures (32-122 F)
- High quality replaceable glass pH probe, suitable for regular water solutions e.g. pools&spas, hydroponics, environmental monitoring, cooling towers, beverage, etc.
- Large LCD with 3 backlit colors (indicating different modes), dual display of temp./pH, and reminders of completed calibrations and stable readings
- The smiley icon indicates stable readings so you won't have to guess when is the right time to record the measurements
- COMPLETE KIT with READY-TO-USE calibration solutions, calibration bottles, storage solutions, AAA batteries, and a lanyard all in a rugged portable case
Description
Apera Instruments PH60 Pocket pH Tester is designed for reliable and easy pH measurement for general water solutions, such as in hydroponics, horticulture, aquaculture, pools& spas, water treatment, cooling towers, environmental monitoring, beverage making, education, etc. The meter comes with a replaceable pH probe (PH60-E) for general water solutions pH test. The meter is also compatible with 3 other types of pH electrodes and an ORP probe (sold separately) for different applications such as solid samples and surface tests. NOTE: Add a few drops of 3M KCL liquid (included in the kit) to their test sample (usually low ion-strength liquid like distilled water or RO water), which will significantly help accelerate the stabilization without affecting the pH reading.
Specs 5
| Product Dimensions | 7 x 1.6 x 1.6 inches |
|---|---|
| Item Weight | 10 ounces |
| Manufacturer | Apera Instruments |
| Item model number | AI311 |
| Batteries | 4 AAA batteries required. (included) |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 12 – Nov 15
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Great Choice for Hydroponics
Style: For General Water Solutions
Summary I was debating between this brand and one of the more popular brands but ultimately went with this due to the "replaceable" tip. I'm glad I did! Pros - Storage case is substantial - made me feel like I bought a true 'scientific instrument' - Came with all the accessories I need! I guess I didn't read the description carefully, but came with calibration fluid as well as storage fluid. There was also a lanyard. - Easy to use! Right off the bat, the device was already calibrated at the factory using all 3 PH values for reference. There is even a certificate certifying the same. I did my own calibration, though, and it was easy to do! (The drawback to doing your own calibration is you'll need the PH 10 reference fluid to complete the trio of calibration. Out of the factory all 3 were done and you'll see an icon L, M, H indicating this. If you do the PH 4 and PH 7 calibrations, you'll get L & M but no H. I'm OK with this but if you need super precision, something to keep in mind.) - Seems accurate based on my drop tester readings (which aren't as accurate because I have to compare color codings). I don't have another reference point so this is my opinion. Cons - As someone else mentioned, the backlight doesn't stay on very long. Not really a true Con for me as I don't need it under the conditions I operate in, but it would be nice to have a setting to adjust how long it stays on. - The storage solution is nice! I ended up using the entire bottle pretty quickly. 2x the size might be nice. It apparently lengthens (or cleans) the probe so I always store it in the solution. The solution seems to rapidly dissipate for whatever reason. More can be bought on its own, however. All in all I am very pleased with this tester. It fits my requirements for hydroponics and nutrient measurements. It was a great price and came with all you need to get started.
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Reviewed in the United States on May 5, 2020 by Psylin
Real scientific instrument
Style: For General Water Solutions
As a scientist I find myself using instruments of all varieties, price points, and complexities, and this pH meter is quite nice indeed. It’s clearly in a much more serious league than the 11 dollar “competitors” available on Amazon or at gardening shops. This meter is easy to calibrate and once set, stays on point. It’s backlight and smiley face feature are great so I can see it in darker conditions and the smile is contagious when my solutions are dialed right in where I need them to be. Remember to rinse after every use and store with cap on and loaded with a little 3Mol KCL solution. This instrument is durable, accurate, easy to use, has nice features, and truly is a professional level piece of equipment of which it’s results can be trusted with confidence. Some of my embryos require an exact pH of 6.25 to stay developing properly and the solution that this pen indicates as being 6.25 pH actually is 6.25 pH. Cheapo other pH pens may indicate that my 6.25 is actually 7.9 or 5.55 depending on which one I’m testing when the actual pH of my solution is 6.25 based both on this meter and confirmed by titration. Spend the money if you actually want to rely on a tool. This is the one.
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Reviewed in the United States on January 13, 2023 by Scienceguy
Better than my old Bluelab so far
Style: For General Water Solutions
I have used a few PH meter pens before. I started with the cheap $15-$20 yellow meters, then switched to a Bluelab PH Pen, and now moved up to this meter. The yellow PH meters are not accurate or consistent. The Bluelab was a huge upgrade. It's an expensive device, but it would not hold a calibration, stopped allowing me to calibrate it, and when I did try to use it, it would take up to 15 minutes and me turning the meter back on multiple times. This is not just to bash Bluelab. I am sure they have good products, but my experience wasn't what the price or hype made it up to be. I finally just got this Apera PH60 pen. The calibration from the factory did not hold up, so it either stayed on a shelf for a long time or just didn't get calibrated well. It was super easy to calibrate and comes with 4.00, 7.00, and 10.01 calibration fluids. It also has testing vials, a lanyard, and KCL soaking solution (to restore the probe if it dries out too much). The probes are replaceable (for about $35) and are supposed to last for a year. One of the nicest touches they added, was a laminated instruction set... so if you get water or calibration fluid on the instructions, they aren't ruined. They also won't come off on a sticker like my Bluelab did. It's obviously too soon for me to review how long the calibration sticks, but I will update my review if I find it doesn't hold a calibration. Overall I am very happy with the purchase so far.
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Reviewed in the United States on November 30, 2020 by Morgan Bleck
decent, could be better
Style: For General Water Solutions
I purchased since this model was highly recommended from many homebrewers. I like that it is easy to use, comes with a case, all the needed pH test liquids, and easy to understand instructions. One main issue is the speed of the readings. When using the calibration liquids the readings are fairly quick. When doing water adjustments and giving my salts time to dissolve, this meter can take up to 2-3 minutes to get a steady reading. I have had it go from 7.8 start only to finally run down to 6.9. When it does get a steady reading, it still jumps up and down anywhere from 3-10 points so I still have to guess an average. The other issue I have is the bulb replacement and pH test liquid replacement costs. The two of them together are about the cost of a new kit. Why would I not just buy a new kit then?
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Reviewed in the United States on March 25, 2024 by hilljack13
It works, and works well.
Style: For General Water Solutions
I wanted to check the accuracy of the pH sensor our pool had. I also hate using those tester strips which require identifying if the colour is light yellow or pale amber... I mean, really? Plus those strips are calibrated for a specific temperature, so any result you get with them will likely be wrong if your water temp is outside the norm. Anyhow, I hunted around and this seemed to be the one a lot of people recommended. It came in a neat little kit that included everything you needed in a hard shell case - although I'd recommend also buying some extra storage solution as the included amount will not last long. Use is super easy, and it automatically adjusts for temperature. You can also modify the settings so the backlight changes colour if the reading is outside the ideal numbers. I wondered why the case had an empty spot, then I realised that was so you could stand the tester up with the cap filled with storage solution. A really nice touch. If you want to keep it in the case with the lid closed, you just need to remember to store it on the side so there is less chance of leakage from the cap. Keep in mind that if you store it in tap, pool, or distilled water that could damage and permanently impact the accuracy of the tester. They do say that if it is stored dry, then that will also impact the accuracy of the sensor, but this can be fixed by soaking it in storage solution for a few days. Personally, I'd just get the storage solution - it's not expensive, the cap only requires a small amount, and you don't have to replace it after every use so a bottle will last a while. As for accuracy - I don't have a lab quality reference device to test it against, but it definitely appears to be more than accurate enough at least for testing a pool at home. I can't say anything about longevity as I've only had it now for a few weeks, but the sensor is replaceable plus it appears to be well made - so I think it should last well if treated with the care something like this deserves. They do have a newer version of this that has bluetooth and a "new improved sensor". For me this is more than good enough I think, I don't really have any need to track the readings over time, and as much as I am a geek the additional cost didn't really seem to justify it. Overall, very happy with this tester.
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Reviewed in the United States on September 1, 2021 by Plastic Spaceman
Easy, convenient, quick and accurate
Style: For General Water Solutions
I recently purchased this Apera PH60 pH Tester for General Purpose in order to test a variety of home foods, drinks, toothpastes, mouthwashs, etc. The intent is to better manage dental health (tooth enamel erosion) by avoiding acidic items as much as possible. As a retired chemist, I understand pH principles and how to properly treat meters, measuring probes, and aqueous test samples. I've used this PH60 tester across most of the pH spectrum (0-14) in aqueous liquids, pastes, and gels over the last few weeks now, and have been pleased with the overall performance. The 3-point auto buffer calibration is quick and easy, and sample readings usually stabilize within seconds. The backlit screen makes it easy to read pH value (with smiley face confirmation of stability), sample temperature, and which buffers were used during last calibration. It's nice knowing this device has the automatic temperature compensation (ATC), since pH is temperature dependent. Immediate and thorough cleaning of critical measuring structures at probe tip (glass sensing bulb and porous reference junction) is, of course, essential, and this has been easily accomplished using distilled water in a 16 loz LDPE squirt bottle (separate purchase). The delicate glass sensing bulb is protected within a cage of plastic, but can easily be accessed by removal of probe cap. This tester is a nice, convenient pocket size, and its plastic body appears to be waterproof. The plastic carry case seems well built and securely holds all the necessary calibration liquids and containers. A relatively simple, compact, conveniently portable pH measuring system good for home or lab use. Given its reasonable price and my hassle-free, positive results thus far, I would definitely recommend.
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Reviewed in the United States on September 15, 2020 by Shawn B.
Not worth it
Style: For General Water Solutions
I've calibrated this thing two times already. I've followed the directions and even watched the apera ph60 video on YouTube on exactly how to calibrate this. It will not stay steady for any second. The readings is all over the place. I've used the cleaner it comes with each time I've recalibrate it and it does not change. It's very frustrating to not know exactly what my ph is. This damn thing was $80. I'm not happy with it. Probably gonna return. Even when calibration it reads all over the place and never an exact reading. I paid the extra money for this because I want not only an accurate reading but a fast one. This is not it
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Reviewed in the United States on June 21, 2026 by Sofa Kingdom
Top notch!
Style: For General Water Solutions
This is the second PH60 that I have purchased recently, one direct from Apera and one via Amazon. To address some concerns some have had of receiving returned, or outdated product this does not at all seem to be the case. This one was dated within several months of the unit that I purchased direct (both later half of 2025) with no signs of being a return. The unit arrived with the typical amount of moisture droplets in the cap, was near perfectly calibrated after an overnight soak in KCL solution and performs equally to the other that I received approximately one month ago. My only complaint is that on the new unit, the storage cap does not fit quite as securely. I checked with my other cap and it fits better so this must be a manufacturing tolerance thing with the process used to make the caps. I do have minor concerns of the integrity of the seal connecting the sensor tip to the body. If the threaded part were to become at all loose, I see that as being a potential for moisture to seep in. I chose to wrap a thin layer of teflon thread tape starting just below the connection and continuing up the threaded area as an extra layer of confidence. So far, based on my experiences with both PH60's and excellent results with another product that I have ordered from Apera, as well as receiving outstanding support for when I had issues relating to international shipping, I am confident that Apera is an outstanding brand.
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Reviewed in the United States on January 29, 2026 by Nick