Is this ready to use out of the box?

Yes. Read the instructions and immerse it in a glass of water.

how do you calibrate this meter?

I know of no way to calibrate this meter. I tested it on deionized water, tap water, Evian bottled water and sewer water — no difference in readings, I tried testing the water in my toilet bowl by dropping it in and flushing it — also no difference I’m sad to assume.

What is the accuracy of this meter?

The accuracy of this meter is ± 2% F.S. This can be used for testing in the lab.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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TDS Meter Digital Water Tester, Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More

TDS Meter Digital Water Tester, Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More

Product ID: 88220819

💧0-9999 ppm ultra-wide range

🌡️3-in-1 TDS, Temp & EC meter

🛡️Protective carrying case included

Description

💧 Stay ahead of water quality—because pure matters!

RUGGED PORTABILITY - Compact design with a durable carrying case and belt clip—perfect for professionals and travelers.
SMART AUTO OFF HOLD - Saves battery life with auto-shutdown and locks readings for easy recording on the go.
INSTANT WATER PURITY CHECK - Get precise ppm readings with a single button press—know your water’s quality in seconds.
ULTRA WIDE MEASUREMENT RANGE - From 0 to 9999 ppm with fine resolution for both low and high dissolved solids.
TRIPLE FUNCTION PROFESSIONAL METER - Measure TDS, temperature, and electrical conductivity all in one sleek device.

The TDS Meter Digital Water Tester is a professional-grade 3-in-1 device that accurately measures total dissolved solids (TDS), temperature, and electrical conductivity (EC) in water. With a broad detection range up to 9999 ppm, instant readings, and a rugged carrying case, it’s ideal for drinking water, aquariums, and field testing. Its smart auto-off and hold functions enhance usability, making it a must-have tool for water quality-conscious professionals and enthusiasts.

Specifications

ASIN	B07H578WWT
Batteries	1 Lithium Metal batteries required. (included)
Best Sellers Rank	#217,062 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,409 in Pool Chemicals & Water Testing Products
Date First Available	September 6, 2018
Is Discontinued By Manufacturer	No
Item Weight	2.08 ounces
Item model number	DU-TDSW
Manufacturer	DUMSAMKER
Product Dimensions	6 x 3 x 0.5 inches

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