How often does this pH meter need to be re-calibrated and/or how can I tell when it needs to be re-calibrated?

The manufacturer recommends keeping the device probe in a neutral storage solution; the protective tip case/container actually has a 'fill' line for guidance, and it is designed to hold a liquid safely when stored as indicated -- If someone uses distilled or deionized water by itself as a storage solution, the salts contained in the probe tip will dissipate and the probe will then need to be replaced--about $25, plus a fine headache trying to get it right. If you are out of storage solution keeping the probe wet somehow is better than dry--but don't store without the specialized solution for more than a day or so; these are typically $10-$13 for 100ml - 250ml size bottles on Amazon.

Can anyone confirm if this comes pre calibrated?

Mine was, the PH20 unit. Dead on, but I still did the cal to know how. If you use it for pH 8.0 or lower, the 4.00 and 7.00 solutions are perfect-no need for 10.00 test buffer solution. I am AMAZED at how bad my cheapy meters are, and how they disagree with each other and this one.

Can this be used to analyze urine?

Yes, it can tests urine with no problem. You can use the probe cap as a container for the urine.

I will be using this meter once a month. Do I need storage solution for the probe?

Storing the probe in the storage solution helps keep the probe's sensitivity and accuracy. So it's a recommended practice. While storing the probe without any solution will not damage the probe, it's just going to cause the probe to lose its sensitivity and accuracy temporarily. Store the probe in the storage solution again for about 10 minutes, the sensitivity and accuracy can be restored.

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LLC AI209 pH Pocket Tester, PH20 Value Waterproof, 0.1 Accuracy, 0-14.0 Range, Complete Kit

Product ID: 48808217

Details

Age range (description)
Adult
Brand
Apera
Colour
Regular Kit
Connectivity technology
Bluetooth
Display type
Digital
Included components
1 Pocket 1 set

⚡0.1 pH accuracy

💧Waterproof design

🔋2000 hours battery life

41.30 OMR

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Description

📊 Elevate your water testing game with precision and ease — don’t get left behind!

ALL IN ONE READY KIT - Comes complete with batteries, calibration solutions, lanyard, and a sleek carrying case for on-the-go testing.
EFFORTLESS CALIBRATION - Auto buffer recognition and 3-point calibration with included solutions—no guesswork needed.
BUILT FOR ANY ENVIRONMENT - Waterproof and rugged design lets you measure confidently indoors or outdoors.
SMART STABILITY DETECTION - Auto recognition of stable values means you never have to second-guess your measurements.
PRECISION THAT PROFESSIONALS TRUST - Ultra-accurate 0.1 pH resolution ensures lab-grade readings every time.

The Apera Instruments AI209 PH20 is a professional-grade pocket pH tester offering 0.1 accuracy across a full 0-14 pH range. Featuring waterproof construction, auto temperature compensation, and smart calibration with buffer recognition, it delivers reliable, stable readings in just 5 seconds. Powered by AAA batteries with up to 2000 hours of use, this complete kit includes everything needed for precise pH monitoring in hydroponics, aquariums, pools, and water treatment.

Specifications

ASIN	B01ENFOHN8
Age Range Description	Adult
Battery Life	2000 Hours
Best Sellers Rank	192,132 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 8 in pH Meters
Brand	Apera Instruments
Colour	Regular Kit
Connectivity Technology	Bluetooth
Customer Reviews	4.3 4.3 out of 5 stars (8,669)
Display Type	Digital
Global Trade Identification Number	00858718006339
Immersion Depth	1E+1 Centimetres
Included Components	1 Pocket tester, 1 set of calibration solutions, 2 batteries, 1 case
Indoor Outdoor Usage	Outdoor
Item Length	218 Millimetres
Item Weight	3.9 Ounces
Lower Temperature Rating	32 Degrees Fahrenheit
Manufacturer	Apera
Manufacturer Part Number	AI209
Model Name	PH20
Model Number	AI209
Number of Batteries	4 AAA batteries required. (included)
Outer Material	Plastic or Silicone
Power Source	Battery Powered
Product Care Instructions	Wipe Clean
Resolution	0.1 degree
Response Time	5 seconds
Reusability	Reusable
Special Features	Waterproof
Specification Met	CE, ISO 9001
Style Name	single
UPC	858718006339
Unit Count	1 Tester
Upper Temperature Rating	50 Degrees Celsius

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41.30 OMR

Duties & taxes included

In stock

Sold byAmazon OMANDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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TrustScore 4.5 | 7,300+ reviews

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