HM Digital

TDS-EZ Total Dissolved Solids Meter

Portable digital meter for testing water purity anywhere. Ideal for verifying RO system performance, checking drinking water quality, and monitoring filtration effectiveness.

0–9990 ppm Range Factory Calibrated Auto-Off

WHY IT WORKS

Accurate water quality testing without complexity

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Advanced Microprocessor

Highly efficient and accurate TDS readings from 0 to 9990 ppm. Resolution of 1 ppm up to 999, then 10 ppm increments with blinking x10 indicator.

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Hold Function

Saves measurements on screen for convenient reading and recording. No need to rush when taking multiple readings or logging data.

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Auto-Off Technology

Meter shuts off automatically after 10 minutes of non-use to conserve battery life. Built for field use and portability.

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Factory Calibrated

Pre-calibrated with 342 ppm NaCl solution. Recalibration possible with mini-screwdriver. Includes reference TDS chart on back of unit.

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Durable Housing

Translucent blue housing is strong and impact-resistant. Large LCD screen is easy to read in various lighting conditions.

COMPATIBILITY

Universal water testing applications

The HM Digital TDS-EZ works with any water source. Ideal for testing RO system output, aquariums, hydroponics, pools, spas, drinking water, well water, and any application where dissolved solids monitoring matters. Use to verify membrane performance, check filter effectiveness, or confirm water quality before and after treatment.

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Best Value

Economy model with professional-grade accuracy for end-users and technicians

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Easy to Use

Simple operation with clear LCD display and intuitive controls

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Portable Design

Compact meter fits in pocket or toolbox for testing anywhere

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Reference Chart

Includes TDS values sticker explaining what different readings mean

Testing &amp; Monitoring Equipment

HM Digital (TDS-EZ) TDS Meter-Monitor for "Total Dissolved Solids"

Testing & Monitoring Equipment