PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
- 【How to use calibration】Press CAL for 5 seconds to enter the calibration mode, press in turn to select the powders corresponding to 6.86, 4, and 9.18 to complete the calibration.
- 【Mini Size】The mini size ph meter we designed allows you to easily put it in your pocket, so you can take measurements anytime, anywhere. It can help you test it whether you take it to the pool, on a trip, to the beach or camping.
- 【Family Essentials】As a tool to improve the quality of life. Can be used to test drinking water, swimming pools, PH balance in aquarium, RO system, spa or hydroponics. Basically all the environments that need to test PH value can use this tester to get accurate data.
- 【Easy to use】turn on the switch,put the probe into the water and stir (make the small glass ball fully contact the liquid) and the value can be read when the value is stable.
- 【Automatic temperature compensation】There is no need to care about the temperature of the liquid being measured. The PH meter has an automatic temperature compensation function, which can be adjusted according to the water temperature and water quality.
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Product details
- Package Dimensions : 6.87 x 2.13 x 1.26 inches; 3.53 ounces
- Batteries : 1 CR2 batteries required.
- Date First Available : September 7, 2020
- Manufacturer : Ruolan
- ASIN : B08HLXBBK4
- Best Sellers Rank: #587 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- Customer Reviews:
Important information
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Product Description
PH tester usage related issues:
- When the PH meter is turned on in the air, the value jumps irregularly, which is a normal phenomenon. The value in the air cannot be used as a reference.
- When measuring the water with the PH meter, it needs to be stirred gently (to remove the bubbles attached to the probe), and it takes a period of stabilization. It is normal for the value to jump up or down during the test. Please do not just insert it and read it immediately.
- White crystalline salt appears around the electrode of the PH meter, which is a normal phenomenon of the PH electrode, and the electrode can be removed by immersing it in water and cleaning.
- The PH meter electrode is made of glass, which is fragile. Please do not drop it or touch it with your hands. Do not test the water above 50℃. Do not test the strong acid and alkali, which will cause the electrode glass to burst.
Product name: 0.01ph automatic calibration ph pen
Test item: water ph value
Working environment: 0-80℃, RH<95%
Measuring range: 0.00-14.00ph
Automatic temperature compensation: 0-80℃
Calibration function: two-point automatic calibration
Application scope: water hydroponics, laboratory, pool,industrial water treatment, water purifier
How to use:
- Take off the pen cover and clean the electrode with pure water
- Put the pen probe into the solution, taking care not to exceed the water level
- Turn on the switch, stir gently, and wait for the reading to stabilize
- After the reading is stable, read the displayed value
- After the test, clean the electrode with pure water, dry the water on the pen tip in time, and cover the pen cover back
Standard configuration:
- 1XPH meter
- 3X calibration powder
- 1X gift box
- 1X instruction manual
Pay attention to the calibration sequence (6.86-4-9.18)
Precautions:
Please note that the PH pen probe is a glass product and is a fragile product. Please do not collide with things. Once the damage is not replaceable, you must protect the probe. After use, use absorbent paper to gently absorb the water on the probe.
Instructions for use of PH calibration powder:
Calibration powder:pH standard solid substance. It can be used after adding water. Suitable for calibrating any type of ph meter. Each package needs to prepare 250ML of purified water.
(Note that the configured water must be purified water or distilled water. Tap water and mineral water cannot be used to configure the calibration solution.
The water must be added in the required proportion, otherwise it will affect the accuracy of the calibration and increase the error)
- The configured calibrators shall be sealed with clean bottles and stored in a cool place away from light.
- The shelf life of the calibration powder is 2 years, and the shelf life of the calibration solution after configuration is 6 months
Matters needing attention:
PH meter has been calibrated before delivery, the buyer does not need to re-calibrate after receiving the goods!
In the following cases, the PH meter must be re-calibrated:
- Has been used for a long time after calibration;
- Special electrode use Frequently;
- The measurement accuracy requirements are relatively high.
About the battery
If the backlight brightness drops significantly or the display value is blurred, the battery should be replaced.
When replacing the battery, just pull out the battery compartment and replace it. NoteThe polarity of the battery.
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the instructions on the lab supply. However, some customers have reported issues with the battery life and construction of the product. They mention that the batteries were dead on arrival and the construction easily breaks. Opinions are mixed on readability, quality, value, accuracy, and performance.
AI-generated from the text of customer reviews
Customers find the instructions for the lab supply very easy to use, operate, and calibrate. They also say it's convenient and easy to read.
"The instructions are simple and setup was easy." Read more
"...Very easy to calibrate and to use. Easy to clean. I had purchased a three in one moisture/PH/light meter....bad move...." Read more
"Like it's handy case, easy to use, tape or film over bottons will for sure not last..." Read more
"...It’s super simple to use too." Read more
Customers are mixed about the accuracy of the lab supply. Some mention it's perfectly accurate after calibrating, while others say that it'll only measure to. It's a reliable tester that can be calibrated and is easy to use. However, some customers say that the numbers on the packet are not accurate at all after calibration, are far from precise, and that it wouldn't calibrate correctly.
"tested compared to chemical tester, not accurate nor consistent" Read more
"great meter ," Read more
"...This time it wouldn't calibrate correctly. The 4 was 6.86, 7 was 9.18 and the 9 was either erroring out or showing high 11/12 readings...." Read more
"...to use (once calibrated, and calibration isn't hard), but the accuracy can be way off...." Read more
Customers are mixed about the performance of the lab supply. Some mention that it works awesome, easy to use, and has different calibration packets. However, others say that it quit working after a few uses, giving different numbers and messing with the function.
"...I bought the first one and it worked the first few times then quit working. I returned it and got a replacement sent...." Read more
"This Ph tester does all it claim to do and does it well. And it is well worth the price.But......" Read more
"...I found on this is if you get any liquid above the probe it messes with the function, saying the PH of your sample is significantly more base than..." Read more
"Worked great" Read more
Customers have mixed opinions about the quality of the pH meter. Some mention that it's worth having a reliable tester that can be calibrated, while others say that it is not lab quality and there's a 50 percent chance that you'll get a malfunctioning meter, making it useless for a couple days.
"...This time around I noticed a white chemical residue on it. Sure enough I was sent a used product that wouldNot even turn on...." Read more
"...But it will take care of you. It's a very good meter & I will buy it again. I use it everyday. And for accuracy...." Read more
"...I followed the instructions but the meter is still all over the place...." Read more
"...The 4 was 6.86, 7 was 9.18 and the 9 was either erroring out or showing high 11/12 readings...." Read more
Customers are mixed about the value of the lab supply. Some mention it's easy to read, easy to use, and a good investment. Others say it'll just ain't worth it, is of cheap quality, and does not effectively tell you your ph.
"...And it is well worth the price.But......" Read more
"This is a very very very cheaply made meter that's VERY susceptible to damage. It's not water proof or even water resistant...." Read more
"Instant results I believe the technology. Incredible price point 💯....." Read more
"...This unit was a few bucks more and is very much worth it." Read more
Customers are mixed about the readability of the lab supply. Some mention that it's easy to read, provides a quick read, and is extremely accurate. However, others say that the reading is erratic at best, fluctuating wildly, and impossible to tell if it''s reading correctly.
"...Even after calibrating it, the reading was fluctuating wildly in the calibration solution...." Read more
"...immediately the equipment after opening the package and the reading was way off but works perfectly after calibration, the process is just tedious..." Read more
"...So something is wrong.so... the readings are easy to see.... The device is easy to use (once calibrated, and calibration isn't hard),..." Read more
"...solution was correct, but after that solution it started reading incorrectly...." Read more
Customers are dissatisfied with the construction of the pH meter. They mention that the filament broke easily, the end was broke on one of them, and the glass diode broke. The meter constantly breaks or just stops working, and it's very susceptible to damage. Customers also say that the meter feels flimsy and could be crushed in their hand.
"...It feels flimsy, almost like I could crush it in my hand. I also don't believe it would survive many falls...." Read more
"...These meters are very delicate, so be careful not to drop it or bang it. It will last a long time, as long as it’s taken care of properly." Read more
"This is a very very very cheaply made meter that's VERY susceptible to damage. It's not water proof or even water resistant...." Read more
"...because while cleaning it water can easily leak in and fry the unprotected electronics...." Read more
Customers are dissatisfied with the battery life of the lab supply. They mention that the batteries are dead, the product has no working batteries, and the battery drains even when powered off.
"...that you must recalibrate under the following conditions: lengthy periods of inactivity (not defined), very frequent use (again not defined), the..." Read more
"Did not turn on when it arrived. I suspect the batteries are dead, but I’m not going to buy replacements since they’re more expensive than this..." Read more
"New batteries didn't help. Bummer. It worked well enough for the brief period that it was working." Read more
"Unit was shipped and batteries were already dead (zero voltage when I measured them). Had to replace with 2 new LR44 batteries...." Read more
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But...
According to the directions, for real accuracy, you need to calibrate the unit periodically, particularly if it has been sitting idle for a long time. I will be using it during the summer and fall, when I ferment some of our summer harvest and make vinegar. I feel I would be wise to calibrate it each year, but the chemical packets you are to add to distilled water for calibration are only large enough for one batch.
That, I don't like.
Not even turn on. First issue was the company and the second possibly Amazon for sending a used product. The third one at least turned on and I was able to calibrate it and test it out.
First off, the moment I unboxed this thing, I felt like a mad scientist about to unravel the secrets of the universe – or at least the mysteries of my tap water. I dubbed it the "pH Master," and boy, does it take its job seriously.
Testing various liquids became a bizarre adventure. I felt like a water detective, hunting down the elusive pH culprits in my kitchen. Spoiler alert: my tap water is apparently more mysterious than a Netflix crime series. Who knew H2O had such a dark side?
Now, the real entertainment comes when you start testing random stuff. I found myself wondering, "What's the pH of my morning coffee? Is my plant's water too basic for its liking?" The pH Master turned me into a liquid Sherlock Holmes, solving the mysteries of pH, one drop at a time.
But let's not forget the dramatic beeping – the pH Master's way of saying, "Hold on to your test tubes, we've got a pH anomaly!" It's like the soundtrack to a suspenseful movie, playing as I decipher the pH code of my surroundings.
In conclusion, the pH meter has turned my ordinary water-drinking life into a thrilling comedy. Who knew checking the acidity of liquids could be this much fun? If you're ready to embark on a journey of liquid discovery and want your water to have a theme song, the pH Master is your ticket to a pHantastic time! 🎭💧 #pHMasterAdventures #WaterDetectiveLaughs