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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Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

Product ID: 255568585

Details

Age range (description)
Adult
Brand
Apera
Colour
Regular Kit
Included components
PH20 Value pH
Special features
Waterproof

⚡±0.1 pH accuracy

💧Waterproof design

🔋2000 hours battery life

€ 92.76

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Description

💧 Stay sharp, stay precise — pH testing made effortless.

READY WHEN YOU ARE - Comes complete with rugged carrying case, pH 4 & 7 buffers, and handy lanyard for on-the-go professionals.
LONG LASTING PERFORMANCE - Up to 2000 hours of continuous use on included AAA batteries keeps you testing without interruption.
BUILT TO BRAVE THE ELEMENTS - Waterproof construction lets you test confidently indoors or out, rain or shine.
PRECISION THAT POWERS DECISIONS - Experience lab-grade ±0.1 pH accuracy for flawless measurements every time.
EFFORTLESS CALIBRATION ZERO GUESSWORK - Auto buffer recognition and temperature compensation guarantee consistent, reliable readings.

The Apera Instruments AI209 PH20 is a waterproof, highly accurate pH tester kit featuring ±0.1 pH precision, automatic calibration with buffer recognition, and temperature compensation for reliable results across 32–122°F. Designed for professionals on the move, it offers up to 2000 hours of battery life, quick 5-second response time, and comes with a rugged carrying case and essential calibration buffers.

Specifications

ASIN	B01ENFOHN8
Additional Features	Waterproof
Age Range Description	Adult
Battery Life	2000 Hours
Brand Name	Apera Instruments
Color	Regular Kit
Connectivity Technology	Bluetooth
Customer Reviews	4.4 4.4 out of 5 stars (8,622)
Display Type	Digital
Global Trade Identification Number	00858718006339
Immersion Depth	1E+1 Centimeters
Included Components	PH20 Value pH tester kit
Indoor Outdoor Usage	Outdoor
Item Length	218 Millimeters
Item Weight	3.9 Ounces
LowerTemperature Range	32 Degrees Fahrenheit
Manufacturer	Apera Instruments
Model	AI209
Model Name	PH20
Number of Batteries	4 AAA batteries required. (included)
Outer Material	Plastic
Part Number	AI209
Power Source	Battery Powered
Product Care Instructions	Hand Wash Only
Resolution	0.1°C
Response Time	5 seconds
Reusability	Rechargeable
Specification Met	CE, RoHS
Style Name	Regular Kit
UPC	858718006339
Unit Count	1 Count
Upper Temperature Range	122 Degrees Fahrenheit

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€ 92.76

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ireland.

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