How do I get warranty support? I have had this for 3 months and it quit working, just shows zero with an occasional flash of random numbers.

It's the horrible design in the battery tray. The pressure that keeps the metal contacts down also lifts the entire battery tray away from it's case making it lose contact. You can try to press them back but it will only happen again.

can i get more Calibration powder?

Yes, available on Amazon. I use liquid ph 7 which I think is more economical and much simpler to use.

where are the batteries? it says included. are they installed inside? Mine won't turn on

Yes they are installed. They are most likely dead, both meters I received came with dead batteries. The thin black cap comes off if the push in the release on the back and pull it up.

Can this be used to test the pH of automotive coolant in your radiator??

Yes. It’s a general liquid ph meter

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💧 Stay ahead of the curve with precision pH testing in your pocket!

CALIBRATED CONFIDENCE - Comes with 3 calibration packages to guarantee reliable and consistent results every time.
PRECISION THAT MATTERS - Ultra-sensitive electrode delivers 0.01 pH accuracy for flawless water quality readings.
VERSATILE WATER TESTING - Perfect for hydroponics, aquariums, pools, drinking water, and more—your all-in-one water quality essential.
POCKET READY PORTABILITY - Compact, lightweight design fits effortlessly in your pocket—test water quality anytime, anywhere.
SMART TEMPERATURE COMPENSATION - Auto-adjusts for water temperature variations, ensuring precise pH readings without extra hassle.

The RuolanPH Meter is a high-accuracy digital pH tester pen with 0.01 precision and a 0-14 pH range. Featuring 3 calibration kits and automatic temperature compensation, it ensures reliable readings across diverse water environments—from hydroponics and aquariums to pools and drinking water. Its compact, pocket-sized design makes it the ultimate on-the-go tool for professionals and enthusiasts committed to water quality excellence.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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HK$252

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Hong Kongstore

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Manufacturer	Ruolan
Part number	ILEE
Item Weight	100 g
Package Dimensions	17.4 x 5.41 x 3.2 cm; 100 g
Batteries	1 CR2 batteries required.
Manufacturer reference	ILEE
Color	Yellow
Style	pH Meter Yellow
Batteries Included?	No
Batteries Required?	No

Ruolan PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Yellow)

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