Low-Range TDS Tester - Economical Pocket TDS Meter for Pure Water - 0.5-100.0 ppm - ±1% F.S.

The Master Science Low-Range TDS Tester is an economical pen meter made for low-concentration liquids such as pure water and drinking water. It measures total dissolved solids from 0.5 to 100.0 ppm in 0.1 ppm steps with ±1% of full scale accuracy.

One push-button calibration point accepts a custom standard solution, and readings are compensated for temperature automatically between 0 and 50 °C. When the sensor wears out, only the electrode module is replaced.

Technical Specifications

Specifications of the Master Science Low-Range TDS Tester:

• Brand: Master Science
• Model Number: MSTDS-P10LSWISS
• SKU: MSTDS-P10LSWISS
• Brand: Master Science
• Model Number: MSTDS-P10LSWISS
• SKU: MSTDS-P10LSWISS
• TDS Range: 0.5 to 100.0 ppm
• TDS Resolution: 0.1 ppm
• TDS Accuracy: ±1% F.S.
• Calibration: 1 point, push-button
• Temperature Range: 0 to 50 °C
• Temperature Resolution / Accuracy: 1 °C / ±1 °C
• Temperature Compensation: 0 to 50 °C, automatic
• TDS Factor: 0.4 to 1.0 (default 0.5)
• Hold Function: Manual
• Auto Power-Off: 8 minutes after last key press
• Operating Temperature: 0 to 50 °C
• Display: Single-line LCD, 21 × 21 mm
• Power: 3 × 1.5 V LR44 batteries
• Battery Life: About 150 hours of continuous use
• Dimensions: 185 mm long × 40 mm diameter
• Weight: 100 g

Key Benefits

• Fine readings in clean water: the Master Science Low-Range TDS Tester resolves 0.1 ppm.
• Lower upkeep cost: replaceable electrode module.
• Easy recording: hold button freezes the value.
• Simple calibration: one button, your own standard.
• Battery saved: auto power-off.

For higher concentrations, see the Master Science multi-range pocket TDS tester.

Product Features

Measurement

• One-point push-button calibration
• Custom calibration solution accepted
• Automatic temperature compensation

Handling

• Hold function
• Auto power-off
• Replaceable electrode module

Applications

The Master Science Low-Range TDS Tester is used for:

• Pure water
• Drinking water
• Education
• Other industrial applications with low-concentration liquids

Common Problems and How This Tester Helps

How the Master Science Low-Range TDS Tester suits clean-water checks:

• Wide-range pens too coarse for pure water: dedicated 100 ppm range with 0.1 ppm steps.
• Whole tester discarded when the sensor fails: electrode module can be changed.
• Value changes before it is written down: hold function.
• Readings affected by water temperature: automatic compensation.