What do you use to clean electrode?

Instructions say to use distilled water to clean electrodes

Would this be a good tool for an aquarium?

Sure it will read the Ph for your tank

Does it work well for testing ph in a saltwater pool?

I don’t know anything about testing pool water but it will definitely give you the ph between 4.0-10

My pen has gone way out of calibration. Is there a way to calibrate it against an accurate test kit? I.e. just set the pH?

I second the answer but Alix. I thought it could be recalibrated against the standards they provide and I would be back to using the ph tool. Once it started to give me bogus readings I knew I had a new paper weight. I even bought 7.0 fluid so I could check it before each use so I knew the readings were correct. I have extensive experience calibrating thousands of gauges in a railroad machine shop to NIST and audited by the ARR annually. Knowing I have a good accurate tool is important to me. The quality of this tool is below the mark. I am surprised as I own VIVOSUN products that are more reliable so I thought I would give it a chance. It lasted almost a year for me.

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VIVOSUN Digital pH Meter 0.01 Accuracy Pen Tester for Water Hydroponics | ±0.01 pH Accuracy, ATC, Auto Calibration, Backlit LCD, Memory, Compact, UL Certified, for Hydroponics Aquarium Pool Drinking

VIVOSUN Digital pH Meter 0.01 Accuracy Pen Tester for Water Hydroponics | ±0.01 pH Accuracy, ATC, Auto Calibration, Backlit LCD, Memory, Compact, UL Certified, for Hydroponics Aquarium Pool Drinking

Product ID: 40679482

Details

Brand
VIVOSUN
Manufacturer
VIVOSUN
Ph Range
0.00-14.00
UPC
714119465581
Unit Count
1 Count

💡Backlit LCD for clear readings anytime

📏±0.01 pH ultra-precise accuracy

🌡️Automatic Temperature Compensation (ATC)

5.15 OMR

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Description

📊 Precision Meets Portability — Own the pH Game!

READY OUT OF THE BOX - Includes batteries and buffer powders so you can start testing immediately.
EFFORTLESS CALIBRATION - Advanced auto-calibration ensures fast, accurate measurements without the guesswork.
SMART TEMPERATURE ADJUSTMENT - ATC technology instantly calibrates readings to water temperature for reliable results.
ANYTIME ANYWHERE READABILITY - Backlit LCD screen delivers crystal-clear data even in low-light environments.
LAB GRADE PRECISION IN YOUR POCKET - Achieve ±0.01 pH accuracy for flawless water and hydroponic testing.

The VIVOSUN Digital pH Meter offers lab-level ±0.01 accuracy with automatic temperature compensation and a backlit LCD, making it the ultimate compact tool for hydroponics, aquariums, pools, and more. Designed for professionals and enthusiasts alike, it comes fully equipped with batteries and calibration powders to deliver fast, reliable pH readings anytime, anywhere.

Specifications

ASIN	B01M5IASHD
Best Sellers Rank	#1,671 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Lab pH Meters
Brand Name	VIVOSUN
Customer Reviews	3.8 3.8 out of 5 stars (8,825)
Included Components	Batteries included
Manufacturer	VIVOSUN
Material Type	ABS
Model Number	4316344538
Part Number	4316344538
Sterility Rating	0.00-14.00
UPC	714119465581
Unit Count	1 Count

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