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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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Digital pH Meter Tester Pen for Water, Pre-Calibrated, High Accuracy ±0.01, 0–14 pH Range, Pocket Size for Drinking Water, Pool, Aquarium & Hydroponics (Yellow)

Product ID: 231974651

👜pocket-size portability

📏±0.01 high accuracy

🧪0–14 full pH range

€ 20.62

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

💧 Stay sharp, stay balanced — your water’s pH guardian on the go!

COMPACT POWERHOUSE - Sleek pocket-sized design fits your on-the-go lifestyle and professional needs.
READY WHEN YOU ARE - Pre-calibrated out of the box—start testing instantly, no setup hassle.
EFFORTLESS CALIBRATION - Easy 3-step calibration with guided instructions keeps your readings razor sharp.
PRECISION YOU CAN TRUST - Calibrated to ±0.01 for lab-grade accuracy in every sip and splash.
VERSATILE WATER TESTING - Perfect for drinking water, pools, aquariums, hydroponics, and RO systems.

This Digital pH Meter Tester Pen offers ultra-precise water pH measurement with ±0.01 accuracy across the full 0–14 range. Pre-calibrated for immediate use and designed in a compact, pocket-friendly form, it’s ideal for professionals and enthusiasts monitoring drinking water, pools, aquariums, and hydroponic systems. Easy calibration and quick readings make it a must-have tool for maintaining optimal water quality anytime, anywhere.

Specifications

ASIN	B08HLXBBK4
Batteries	1 CR2 batteries required.
Best Sellers Rank	#1,425 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Lab pH Meters
Date First Available	September 7, 2020
Item Weight	3.52 ounces
Manufacturer	Ruolan
Package Dimensions	6.85 x 2.13 x 1.26 inches

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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€ 20.62

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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