Three-in-one water quality test pen EC meter conductivity meter TDS test pen

1. Solid metal button, after rigorous testing of 100,000 hits, it is not easy to press the button 

2. Our batteries are made of high-capacity environmentally-friendly electronics, with long life and large capacity. Under normal circumstances, our electronics can be used for 1-2 years. 

 3. Our battery card is soldered on the circuit board, there will be no bad contact, free power off, etc.

TDS Meter – Accurate Water Purity & Mineral Measurement

Perfect for homeowners, aquarium keepers, hydroponic growers, pool owners, and water quality conscious individuals across New Zealand

If you want to quickly and reliably assess the mineral content or purity of water, a TDS Meter provides instant Total Dissolved Solids (TDS) readings to determine water quality. Ideal for drinking water safety checks, reverse osmosis system monitoring, aquarium maintenance, hydroponics nutrient balance, and spa/pool water testing, these meters deliver practical insights in seconds. Whether testing Auckland tap water, aquaculture tanks in Canterbury, or garden irrigation supplies in Waikato, TDS Meters offer accurate measurement and easy-to-read results tailored to NZ needs.

Description – TDS Meter

A TDS Meter is a compact electronic water testing device designed to measure Total Dissolved Solids in water samples, expressed in parts per million (ppm). Total Dissolved Solids refer to the concentration of dissolved inorganic salts and small organic compounds present in water, including minerals such as calcium, magnesium, sodium, potassium, and other dissolved solids.

The meter typically consists of a handheld enclosure with a digital LCD screen and a probe at the bottom that is submerged into the water sample. Inside the probe, electrodes measure the electrical conductivity of the water. Because dissolved solids increase conductivity, the TDS Meter converts this conductivity into a TDS value that represents the concentration of dissolved ions. Higher TDS values generally indicate higher mineral content or contamination levels.

Constructed using robust ABS plastic or lightweight polymer housings, TDS Meters are designed for portability and daily use. The compact size enables field testing without the need for laboratory equipment. Water systems such as drinking taps, wells, aquariums, hydroponic solutions, pools, and reverse osmosis setups benefit from frequent monitoring to ensure desired water quality.

Many TDS Meters feature calibration functions, allowing users to adjust readings using known standard solutions to maintain accuracy over time. Automatic temperature compensation (ATC) enhances measurement reliability by correcting conductivity readings based on water temperature, an important factor in NZ regions where water sources may vary seasonally.

Operation is straightforward: turn on the meter, submerge the probe into the water sample up to the indicated depth, wait for stable readings, and view the numeric TDS value on the display. Some meters also provide conductivity (EC) and temperature readings for more comprehensive water analysis.

For example:

• Low TDS readings are common in purified or distilled water
  
• Moderate levels indicate natural mineral content suitable for drinking
  
• High readings may warrant filtration or further testing for contaminants
  

TDS measurement is valuable in various scenarios:

• Home Drinking Water: Check tap water or filtered water to ensure mineral levels are within acceptable ranges.
  
• Aquariums & Aquaculture: Maintain stable water quality conditions for fish and aquatic life by detecting dissolved solid changes.
  
• Hydroponics: Monitor nutrient solution concentration to optimise plant growth.
  
• Swimming Pools & Spas: Track water mineral content as part of broader chemical testing routines.
  
• Water Filtration Systems: Evaluate reverse osmosis or carbon filter performance by comparing pre- and post-filtration TDS values.
  

Batteries power handheld TDS Meters, typically AAA or button cells. Automatic shut-off conserves battery life. Some advanced models incorporate backlit displays for easier reading in low-light conditions.

Calibration requires using a known calibration solution to ensure the meter’s probe produces correct TDS values. Regular calibration enhances accuracy, especially for critical water quality assessments.

Maintenance involves rinsing the probe with clean water after each use and storing the meter dry and safe. Protecting the probe from physical impact and contamination ensures consistent performance.

Key Points

Accurate TDS Measurement: Measures dissolved solids concentration in water, expressed in ppm.

Portable Handheld Design: Compact construction for easy field and home use in NZ environments.

Automatic Temperature Compensation: Adjusts conductivity readings based on water temperature for accuracy.

User-Friendly Interface: Digital display with straightforward operation and quick readouts.

Benefits

Immediate Water Quality Feedback: Provides fast insight into mineral content without laboratory testing.

Supports Multiple Applications: Useful for drinking water checks, aquariums, hydroponics, pools, and filtration evaluation.

Promotes Health & Safety: Helps identify high dissolved solids that may affect taste or equipment performance.

Low Maintenance: Simple care and calibration routines keep the meter reliable.

Why Choose This TDS Meter?

This TDS Meter offers reliable, user-friendly measurement for individuals and professionals seeking quick insight into water quality. Unlike generic testers that lack calibration or temperature compensation, this model includes essential features such as automatic temperature correction and simple calibration options to ensure trusted readings.

Its portability makes it suitable for field use in diverse New Zealand settings—from urban tap water checks to rural well water assessment. The clear digital display and easy operation allow immediate interpretation of results, enabling informed water quality decisions without specialised training.

Whether you’re maintaining optimal hydroponic nutrient levels, ensuring safe drinking water for your family, or monitoring aquarium conditions, this TDS Meter provides dependable performance and practical reading precision.

Conclusion

A TDS Meter is an essential, compact tool for measuring dissolved solids in water across residential, agricultural, and recreational applications. With accurate readings, user-friendly design, and automatic temperature compensation, it enables swift water quality assessment tailored to New Zealand needs.

Reliable and simple to use, this meter helps homeowners, hobbyists, and professionals monitor water quality with confidence.