When you meet calibration error-like you would like to calibrate pH 6.86 but get 4.01 value, please

Long press the "HOLD/TEMP" & "MODE/CAL" Button for 3-5 seconds to restore factory Settings, and then use the powder pack for calibration the Digital pH meter

It took a long time to calibrate or after calibrating, the reading was tested but the reading came out "0" value?

Please check whether the glass probe was broken. If not that means you met calibration error. For this issue, please long press the "HOLD/TEMP" & "MODE/CAL" Button for 3-5 seconds to restore factory Settings, and then use the powder pack to calibrate

For better using experience of the pH meter for water

We recommend to soak the pH meter in clear water for 5 minutes before starting calibration after receive the product or long time no use. Because it may cause inaccurate readings if you immediate use for the first time or long time no use.

Accuracy of this digital pool water tester

±0.01 pH Resolution, pH Range: 0.00 to 14.00 pH; 1ppm, ±0.1ppt Resolution, TDS Value: -9990ppm; ±32.9˚F/0.5˚C Resolution,TEMP: 32 to 140˚F (0 to 60˚C); Auto Power-Off: 5 minutes without operation.

Why isn't the pH meter calibrating correctly after following the temperature and solution instructions?

Please check if the product has gotten water inside. If it has, please disassemble the product, shake out the water, and then let it air dry naturally.

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pH Meter, 3-in-1 TDS Meter Digital Water Tester with 0.01 High Precision

Product ID: 267856059

Details

Battery Description
Alkaline
Brand
PmoYoKo
Color
Grey
Item Weight
0.17 Kilograms
Product Dimensions
1.5"W x 7.2"H

📏0.01 pH precision

🧪3-in-1 pH/TDS/Temp testing

🌡️32°F–140°F temp range

€ 49.71

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Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Precision Meets Portability — Never Miss a Beat in Water Quality!

TEMPERATURE COMPENSATED ACCURACY - Advanced ATC technology guarantees reliable pH results across a wide temperature range (32°F–140°F), eliminating guesswork.
ALL IN ONE WATER QUALITY ANALYSIS - Simplify your toolkit with simultaneous pH, TDS, and temperature measurements—no device swapping needed.
LAB GRADE PRECISION AT YOUR FINGERTIPS - Experience ultra-accurate 0.01 resolution readings trusted by professionals across brewing, aquariums, and R&D.
SMART BACKLIT DISPLAY FOR ANY ENVIRONMENT - Auto-activated bright backlight ensures effortless readings even in low-light grow tents or nighttime testing.
POCKET SIZED PORTABILITY FOR ON THE GO TESTING - Compact and lightweight design fits in your pocket, perfect for poolside, garden, or field water quality checks anytime.

The PmoYoKo 3-in-1 Digital pH Meter delivers lab-grade precision with 0.01 resolution, measuring pH, TDS, and temperature simultaneously. Featuring an auto-activated backlit LCD and advanced ATC temperature compensation, it ensures accurate water quality testing across 32°F–140°F. Its compact, pocket-sized design makes it ideal for professionals and enthusiasts monitoring pools, aquariums, hydroponics, and beverages on the go.

Specifications

ASIN	B08RD488NP
Battery Description	Alkaline
Best Sellers Rank	#20,653 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20 in Lab pH Meters
Brand	PmoYoKo
Brand Name	PmoYoKo
Color	Grey
Customer Reviews	4.0 out of 5 stars 2,252 Reviews
Global Trade Identification Number	00721678690132
Included Components	1*pH Meter Digtal, 3 pH buffer powder
Item Dimensions W x H	1.5"W x 7.2"H
Item Highlight	0-14 pH Test Range, LCD Display, ATC, Pocket Size TDS/Temp/pH Tester for Wine, Aquarium, Pool, Indoor Plants and Drinking
Item Weight	0.17 kg
Manufacturer	PmoYoKo
Model	EZ-9901
Mounting Type	Tabletop
Number of Items	1
Part Number	PH-9901
Product Dimensions	1.5"W x 7.2"H
Temperature Accuracy	0.5
Temperature Reading Accuracy	plus_minus_0_point_5_degrees_celsius
UPC	692041265243 692041265113 721678690132 692041265106
Unit Count	1 Count
Upper Temperature Range	140 °F
Voltage	1.5 volts

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 49.71

Duties & taxes included

In stock

Sold byAmazon FranceDelivered 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 France.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Good experience, but the tracking updates could be better.

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