APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH AccuracyCarbonfree Certified

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH AccuracyCarbonfree Certified

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Product ID: 34756289

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Details

Brand
Apera
Special Feature
Waterproof
Color
Regular Kit
Age Range (Description)
Adult
Included Components
PH20 Value pH
Outer Material
Plastic

💧Waterproof design for rugged use

🔋2000 hours continuous battery life

⚙️±0.1 pH ultra-precise accuracy

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APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

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Description

💧 Precision that keeps pace with your professional edge

LONG LASTING POWER - Up to 2000 hours of continuous operation powered by AAA batteries means less downtime, more productivity.
RAPID RESPONSE SENSOR - Low impedance pH sensor delivers fast, consistent readings so you stay ahead in your workflow.
READY FOR FIELD LAB - Comes complete with pH 4 & 7 buffers, rugged carrying case, and lanyard—perfect for on-the-go professionals.
TEMPERATURE RESILIENT ACCURACY - Auto temperature compensation (32-122°F) guarantees reliable pH measurements no matter the environment.
EFFORTLESS PRECISION CALIBRATION - Auto buffer recognition means zero guesswork—calibrate in seconds and trust your readings every time.

The APERA AI209 PH20 is a waterproof, carbon-free certified pH tester delivering ±0.1 pH accuracy with auto calibration and temperature compensation. Designed for professionals, it features a fast-response low impedance sensor, comes with essential calibration buffers and a rugged case, and offers up to 2000 hours of battery life for reliable, on-the-go pH measurement.

Have a Question? See What Others Asked

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

Can anyone confirm if this comes pre calibrated?

Can this be used to analyze urine?

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

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