R-Tek Mini Water Quality Testers

A. Product Overview

R-Tek Mini Water Quality Testers provide simple and portable solutions for checking common water quality parameters in field, laboratory and everyday applications.

R-Tek RT-201 TDS Meter

The RT-201 is a portable digital tester for measuring Total Dissolved Solids and water temperature.

Key specifications and features include:

• TDS measurement from 0 to 9990 ppm
• Water temperature measurement from 0°C to 99°C
• Approximately ±2 percent accuracy
• Display in ppm and mg/L
• Celsius and Fahrenheit temperature indication
• Compact handheld design

It is suitable for drinking water, RO systems, aquariums, laboratories and general water testing.

R-Tek RT-202 pH Meter

The RT-202 is a compact digital instrument designed for measuring the acidity or alkalinity of water.

Key features include:

• Measurement range from 0.0 to 14.0 pH
• Resolution of 0.1 pH
• Digital LCD display
• Auto Hold function
• Auto Off function
• Portable handheld construction

It can be used for aquariums, ponds, swimming pools, laboratories and general water quality testing.

R-Tek RT-203 TDS, EC and Temperature Meter

The RT-203 combines multiple water testing functions in one compact instrument.

It can measure:

• TDS from 0 to 9999 ppm
• Electrical conductivity from 0 to 9999 µS/cm
• Temperature from approximately 0.1°C to 80°C
• Accuracy of approximately ±2 percent full scale

It is suitable for applications where users need both dissolved solids and conductivity information along with water temperature.

B. Working Principle

Each R-Tek Mini Water Quality Tester measures a different water quality parameter.

TDS Measurement

RT-201 and RT-203 determine Total Dissolved Solids by measuring the electrical characteristics of the water.

Water containing dissolved salts and minerals conducts electricity. The tester senses this conductivity and converts the measured value into an estimated TDS reading in ppm or mg/L.

Higher dissolved mineral content generally results in a higher TDS reading.

EC Measurement

The RT-203 measures electrical conductivity directly.

Its sensing electrodes detect how easily electrical current passes through the water. The conductivity value is then displayed in µS/cm.

EC measurement is useful for evaluating the concentration of dissolved ionic substances in water.

pH Measurement

The RT-202 uses a pH sensing electrode that responds to hydrogen ion activity in the water.

The instrument converts the electrical potential generated by the electrode into a pH value between 0 and 14.

Values below 7 indicate acidic conditions, while values above 7 indicate alkaline conditions. A value around 7 represents neutral conditions.

Temperature Measurement

RT-201 and RT-203 use an internal temperature sensor to measure the temperature of the water sample and display the reading digitally.

C. Why R-Tek Mini Water Quality Testers Are Used

Water quality can affect drinking water safety, equipment performance, aquatic life, industrial processes and treatment efficiency.

R-Tek Mini Water Quality Testers can be used for:

• Checking drinking water quality
• Monitoring RO water
• Checking TDS after filtration
• Measuring pH in water
• Monitoring aquarium water
• Testing swimming pool water
• Checking pond water
• Monitoring conductivity
• Testing laboratory water samples
• Checking water treatment systems
• Monitoring water temperature
• Comparing untreated and treated water
• Routine water quality inspection
• Field water testing
• General environmental water monitoring

These testers provide quick results without requiring a large laboratory instrument.

D. Suitable Buyers

R-Tek Mini Water Quality Testers are suitable for:

• Water treatment companies
• RO system manufacturers
• RO service technicians
• Water purifier dealers
• Laboratories
• Research institutes
• Schools and colleges
• Aquarium owners
• Aquarium shops
• Fish farms
• Swimming pool maintenance companies
• Hotels and resorts
• Food processing companies
• Industrial maintenance departments
• Quality control teams
• Environmental testing professionals
• Water testing service providers
• Agricultural users
• Instrument dealers
• Water quality equipment suppliers

Frequently Asked Questions

1. Which models are available in the R-Tek Mini Water Quality Tester range?

The range includes RT-201 TDS Meter, RT-202 pH Meter and RT-203 TDS, EC and Temperature Meter.

2. Which R-Tek model is suitable for TDS measurement?

RT-201 and RT-203 can both measure Total Dissolved Solids.

3. Which R-Tek model measures pH?

The RT-202 is designed for measuring pH from 0.0 to 14.0.

4. Which model measures electrical conductivity?

The RT-203 measures electrical conductivity along with TDS and temperature.

5. What is the TDS range of RT-201?

The RT-201 measures TDS from 0 to 9990 ppm.

6. What is the pH range of RT-202?

The RT-202 provides a measurement range from 0.0 to 14.0 pH.

7. What is the EC range of RT-203?

The RT-203 measures electrical conductivity from 0 to 9999 µS/cm.

8. Does RT-203 measure temperature?

Yes. RT-203 can measure temperature from approximately 0.1°C to 80°C.

9. Does RT-201 measure temperature?

Yes. RT-201 measures water temperature along with TDS.

10. Can R-Tek water testers be used for RO water?

Yes. RT-201 and RT-203 are particularly useful for comparing TDS levels before and after RO filtration.

11. Can RT-202 be used for swimming pool water?

Yes. RT-202 can be used for checking the pH of swimming pool water.

12. Are these testers suitable for aquariums?

Yes. TDS, pH, conductivity and temperature can all be useful parameters for aquarium water monitoring.

13. What is the difference between TDS and EC?

TDS represents the estimated concentration of dissolved substances in water, usually expressed in ppm or mg/L. EC measures the ability of water to conduct electricity and is usually expressed in µS/cm.

14. What is the difference between RT-201 and RT-203?

RT-201 measures TDS and temperature. RT-203 measures TDS, electrical conductivity and temperature, making it suitable when additional conductivity measurement is required.

15. Which model should I choose for pH testing?

Choose RT-202 when your primary requirement is measuring water acidity or alkalinity.

16. Which model should I choose for combined water testing?

Choose RT-203 when you need TDS, EC and temperature measurement in one portable instrument.