Handheld Total Dissolved Solids TDS Meter and Thermometer for Aquariums, Ponds, Hydroponics, Pools

📋 Overview

Know exactly what's in your water. This handheld digital TDS (Total Dissolved Solids) meter measures the concentration of dissolved minerals, salts, and metals in any water source, giving you an instant reading in parts per million (ppm). Whether you're checking your drinking water, testing a filter, or monitoring a pool, spa, aquarium, or hydroponic system, this compact meter gives you fast, reliable results at the push of a button.

⭐ Key Features

• Instant digital PPM readout for total dissolved solids
• Built-in temperature mode (switches between Celsius and Fahrenheit)
• HOLD button locks in your reading for easy viewing out of the water
• Automatic "x10" indicator for high-range readings
• Compact, pocket-sized design with protective cap
• Simple two-button operation — no calibration required for everyday use

🎯 Applications

• Checking the performance of water filters and reverse osmosis systems
• Testing water hardness (1 grain = 17 ppm)
• Monitoring drinking water quality
• Monitoring pools, spas, aquariums, and hydroponic reservoirs

🔧 How to Use It

1. Remove the protective cap and press the On/Off button.
2. Submerge the sensor end of the meter into the water — about 1" is plenty. Never exceed the maximum immersion level (approx. 1.5"); the unit is not water-tight.
3. Lightly stir to dislodge air bubbles, then wait about 10 seconds for the reading to stabilize.
4. Press HOLD to lock in the reading, then view it out of the water.
5. Press TEMP to check the water temperature in °C or °F.

💡 Tip: If the display shows a flashing "x10" symbol, multiply your reading by 10 for the true PPM value.

📊 Specifications

📦 What's in the Box

• 1x Digital TDS Meter
• 2x LR44 1.5V Button Cell Batteries (installed)
• 1x Protective Cap

📄 Documentation & Resources

• TDS Total Dissolved Solids Meter User Guide
• All Meter & Tester User Guides

Sold and supported by Envistia Mall. Ships from the USA. For full specifications, wiring examples, and troubleshooting, see the User Guide linked above. The manufacturer and Envistia LLC (dba Envistia Mall) are not responsible for any damages or losses resulting from the use of this product. Always follow proper electrical safety practices when working with electronic components. Specifications are based on manufacturer data and translation of the original manufacturer's instruction manual and may vary between production batches.