Mid-Range TDS Tester - Economical Pocket TDS Meter for Tap Water - 5-1000 ppm, 1 ppm Resolution

The Master Science Mid-Range TDS Tester is a pen-style meter for everyday dissolved-solids checks in tap water and clean water. It covers 5 to 1000 ppm in 1 ppm steps, which suits drinking water, aquarium water and general process water.

Operation is kept to the basics: one button calibrates the meter against the standard you choose, a hold key freezes the reading, and the Master Science Mid-Range TDS Tester switches itself off after eight idle minutes. When the sensor wears out, only the electrode module is replaced.

Technical Specifications

Measured data for the Master Science Mid-Range TDS Tester are listed below.

• Brand: Master Science
• Model Number: MSTDS-P10MSWISS
• SKU: MSTDS-P10MSWISS
• TDS Range: 5 to 1000 ppm
• TDS Resolution: 1 ppm
• TDS Accuracy: ±1% F.S.
• Calibration Points: 1 point
• Temperature Range: 0 to 50°C
• Temperature Resolution: 1°C
• Temperature Accuracy: ±1°C
• Temperature Compensation: 0 to 50°C, automatic
• TDS Factor: 0.4 to 1.0 (default 0.5)
• Hold Function: Manual
• Auto-Off: 8 minutes after last key press
• Operating Temperature: 0 to 50°C
• Display: Single-line LCD (21 x 21 mm)
• Power: 3 x 1.5 V LR44 micro alkaline batteries
• Battery Life: About 150 hours of continuous use
• Dimensions: 185 (L) x 40 (Dia.) mm
• Weight: 100 g

Key Benefits

• Right range for tap water:: the Master Science Mid-Range TDS Tester reads 5 to 1000 ppm in 1 ppm steps.
• Lower upkeep cost:: replaceable electrode module.
• Easy recording:: hold key freezes the value on screen.
• Flexible calibration:: one button, with a standard of your choice.
• Long battery life:: around 150 hours, helped by auto power-off.

For saline or high-concentration samples, see the Master Science multi-range pocket TDS tester.

Product Features

Measurement

• One-point push-button calibration accepts a custom calibration solution
• Automatic temperature compensation from 0 to 50°C
• Adjustable TDS factor from 0.4 to 1.0

Handling

• Hold function freezes the reading for viewing and note-taking
• Auto power-off after 8 minutes without a key press
• Replaceable electrode module keeps maintenance cost down
• Single-line LCD, 21 x 21 mm

Applications

The Master Science Mid-Range TDS Tester is intended for general water checks such as:

• Tap water and clean water
• Aquariums
• General industrial water checks

Common Problems This Tester Solves

Routine water checks often go wrong for simple reasons.

• Readings drift with water temperature:: automatic compensation corrects the value between 0 and 50°C.
• The number changes before it is written down:: the hold key keeps it on the display.
• Batteries run flat in a drawer:: the tester shuts off by itself after 8 minutes.
• A worn sensor means buying a new meter:: only the electrode module needs replacing.