Check your water quality quickly and easily with the TDS/TEMP Meter – Digital Water Quality Tester. This compact pen-style meter is designed to measure Total Dissolved Solids (TDS) in water and helps you monitor the quality of drinking water, RO water, filtered water, purifier water, and other water-based solutions.

With a clear LCD display, HOLD function, temperature button, and portable design, this meter is ideal for home users, water purifier monitoring, DIY testing, skincare formulation water checks, and general water quality awareness.

At Bio Shop™, we recommend using a TDS meter as a simple and practical tool to check whether your water purifier or RO filter is performing properly.

Key Features

Digital TDS Reading
Measures total dissolved solids in water from 0–9990 ppm.

TDS + Temperature Function
Built-in TEMP button for checking water temperature reading support.

HOLD Function
Press HOLD to save the reading on the screen for easy recording.

Auto-Off Function
Automatically turns off after around 5 minutes of non-use to help conserve battery life.

Compact Pen Design
Lightweight, portable, and easy to carry for home, shop, lab, or field use.

LCD Display
Clear digital screen for quick and simple reading.

Protective Cap Included
Helps protect the probe area when not in use.

Best For

Drinking water quality checks
RO and filtered water testing
Water purifier cartridge monitoring
Home water testing
DIY cosmetic formulation water checks
Aquarium, hydroponic, and general solution testing
Checking distilled or demineralized water quality

Technical Specifications

How to Use

1. Remove the protective cap.
2. Press the ON/OFF button to turn the meter on.
3. Immerse the probe into water or solution up to the maximum immersion level.
4. Wait around 10–30 seconds until the reading stabilizes.
5. Read the value shown on the LCD display.
6. Press HOLD if you want to save the reading.
7. After use, shake off excess water and wipe the probe area with a clean tissue.
8. Replace the protective cap before storage.

Important Usage Notes

Do not dip the entire meter into water. Only immerse the probe area up to the maximum level.
Do not store the meter in direct sunlight or high temperature.
Do not drop, press, or strike the meter.
Always wipe dry after use.
This is a testing tool for general water quality checking and does not identify specific contaminants, bacteria, heavy metals, or chemicals individually.

What is TDS?

TDS means Total Dissolved Solids. It shows the amount of dissolved minerals, salts, and other solids present in water. A TDS meter gives the reading in ppm, which means parts per million.

A lower TDS value usually means fewer dissolved solids in water, while a higher value means more dissolved material is present. For RO and filtered water users, TDS testing is helpful for monitoring filter performance.

Package Includes

1 × TDS/TEMP Meter
1 × Protective Cap
1 × Retail Box