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

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

📏±0.01 pH ultra-precise accuracy

🌡️ATC auto temp compensation

£24.12

Duties & taxes included

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Sold byAmazon Isle of ManDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay ahead with precision—because your water deserves the best!

COMPACT READY TO GO - Pocket-sized, lightweight design with batteries included—perfect for on-the-move testing in any environment.
EFFORTLESS CALIBRATION - Advanced auto-calibration technology guarantees fast, accurate results every time—no guesswork needed.
SMART TEMPERATURE ADAPTATION - Automatic Temperature Compensation (ATC) ensures instant, reliable pH readings regardless of water temp.
VERSATILE APPLICATION POWERHOUSE - Ideal for hydroponics, aquariums, pools, labs, and more—join thousands of pros optimizing their water quality.
PRECISION THAT PROFESSIONALS TRUST - Achieve lab-grade ±0.01 pH accuracy for flawless water quality control.

The VIVOSUN Digital pH Meter delivers professional-grade ±0.01 accuracy with automatic temperature compensation and easy auto-calibration. Its compact, lightweight design features a backlit LCD for clear readings in any setting. Perfectly suited for hydroponics, aquaculture, pools, labs, and more, this UL-certified pen tester comes ready with batteries and calibration powders, empowering you to maintain optimal water quality effortlessly.

Specifications

ASIN	B01M5IASHD
Best Sellers Rank	#576 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Lab pH Meters
Brand	VIVOSUN
Brand Name	VIVOSUN
Customer Reviews	4.0 out of 5 stars 33,941 Reviews
Included Components	Batteries included
Item Highlight	±0.01 pH Accuracy, ATC, Auto Calibration, Backlit LCD, Memory, Compact, UL Certified, for Hydroponics Aquarium Pool Drinking Item Highlight ±0.01 pH Accuracy, ATC, Auto Calibration, Backlit LCD, Memory, Compact, UL Certified, for Hydroponics Aquarium Pool Drinking See more
Item Weight	0.11 kg
Manufacturer	VIVOSUN
Material Type	ABS
Model Number	4316344538
Number of Items	1
Part Number	4316344538
Ph Range	0.00-14.00
Sterility Rating	0.00-14.00
UPC	714119465581
Unit Count	1 Count

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£24.12

Duties & taxes included

In stock

Sold byAmazon Isle of ManDelivered 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 Isle of Man.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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