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MEXYBE 4-in-1 Digital TDS Water Tester, 0–9999 ppm1 / 5
Product guide

MEXYBE 4-in-1 Digital TDS Water Tester, 0–9999 ppm

The MEXYBE 4-in-1 digital TDS water tester measures TDS, electrical conductivity, and temperature in Celsius or Fahrenheit. Its backlit display and hold function are intended to make spot checks easier across water sources and systems.

At a glance

  • Measures TDS and EC, with temperature readings in °C or °F.
  • Backlit LCD, hold function, and automatic shutoff after 2 minutes are claimed for easier spot checks.
  • The listing describes use for RO/DI systems, aquariums, hydroponics, pools, spas, and tap or bottled water.
Price
$8.98Save 10%

Reference price: $9.99

Price checked: Nov 11, 2026

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Often bought together

Pros and cons

Pros

  • Combines TDS, EC, and two temperature scales in one handheld tester.
  • A backlit display and hold function can help when reading results in dim conditions or away from the water source.
  • The stated applications cover common household water checks as well as aquarium and hydroponic monitoring.

Technical specifications

8 specifications
Measurements
FunctionsTDS (Total Dissolved Solids), EC (Electrical Conductivity), Temperature (Degree Centigrade) and Temperature (Fahrenheit)
TDS range stated in title0-9999ppm
Display and operation
Displaybig backlit LCD
Functionsauto-lock function
Functionshold function
Power-saving featureauto-0ff in 2 minutes
Construction and calibration
Probepremium titanium alloy probe
Calibrationfactory calibrated

What to know before buying

Listing details to confirm

The 0-9999ppm range appears in the title, while the feature text gives no measurement accuracy, EC range, temperature range, or calibration procedure, TDS readings alone do not establish that water is safe to drink or diagnose every water contaminant. The listing also varies between 2025 and 2026 naming and uses 'auto-lock' without explaining its behavior.

Who is it for?

A good fit for

  • People who want a handheld spot-check tool for TDS and EC readings in household water or RO/DI systems.
  • Aquarium and hydroponic users who want to monitor conductivity-related readings and temperature.

Less suited to

  • Anyone needing a complete drinking-water safety assessment or identification of specific contaminants.
  • Buyers who need stated accuracy, detailed measurement ranges, or a documented calibration method.
MEXYBE 4-in-1 Digital TDS Water Tester, 0–9999 ppm · photo 2
Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 6,589 ratings
  • 5 stars73%73%
  • 4 stars13%13%
  • 3 stars7%7%
  • 2 stars2%2%
  • 1 star5%5%

The supplied evidence includes an aggregate rating of 4.4 out of 5 stars but no review count or customer comments. That figure is a limited signal of overall ratings, not evidence about measurement accuracy, ease of use, or performance in a particular water system.

Frequently asked questions

What does this tester measure?

The listing describes TDS, electrical conductivity (EC), and temperature readings in Celsius and Fahrenheit.

Can it determine whether drinking water is safe?

The listing promotes drinking-water checks, but it provides no evidence that the meter detects particular contaminants or establishes overall safety. Treat it as a spot-check device, not a comprehensive water analysis.

What is the stated TDS range?

The title states 0-9999ppm. The listing does not provide a measurement accuracy figure.

MEXYBE 4-in-1 Digital TDS Water Tester, 0–9999 ppm · photo 3
Additional product photo 3

Alternative options

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