HM Digital TDS-3 Handheld TDS Meter with Carrying Case
Monitor water purity anywhere with the HM Digital TDS-3 — a professional-grade, pocket-sized Total Dissolved Solids (TDS) meter trusted for water purification, hydroponics, aquaculture, reverse osmosis (RO) system verification, colloidal silver production, pool & spa testing, and wastewater regulation. Powered by advanced microprocessor technology, the TDS-3 delivers fast, accurate ppm readings with Automatic Temperature Compensation (ATC) and a built-in digital thermometer — all in a rugged, belt-clip carrying case.
Key Features
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Wide Measurement Range: 0–9990 ppm — 0–999 ppm at 1 ppm resolution; 1000–9990 ppm at 10 ppm resolution (indicated by blinking ‘x10’ icon)
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Built-In Digital Thermometer — Measures temperature from 0–80°C simultaneously with TDS for complete water quality snapshots
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Automatic Temperature Compensation (ATC) — Corrects readings automatically from 1–50°C (33–122°F) for accurate results regardless of sample temperature
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Hold Function — Freezes the measurement on screen for convenient reading and recording without keeping the probe submerged
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Auto-Off — Shuts off automatically after 10 minutes of non-use to conserve battery life
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1000-Hour Battery Life — 2 × 1.5V LR44 button cell batteries included; exceptional runtime for field and commercial use
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Factory Calibrated — Calibrated with 342 ppm NaCl solution; recalibration available via mini-screwdriver trimmer
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Large, Easy-to-Read LCD Display — Clear readout in any lighting condition
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Carrying Case with Belt Clip — Protective case keeps the meter safe and accessible; ideal for field technicians and commercial use
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Advanced Microprocessor Technology — Highly efficient and accurate readings across the full measurement range
Technical Specifications
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TDS Range: 0 – 9990 ppm (mg/L)
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Resolution: 0–999 ppm: 1 ppm | 1000–9990 ppm: 10 ppm (‘x10’ icon)
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Accuracy: ±2%
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EC-to-TDS Conversion Factor: NaCl (avg. 0.5)
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Temperature Range: 0 – 80°C
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Temperature Resolution: 0.1°C (Celsius only)
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ATC Range: 1 – 50°C (33 – 122°F)
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Power: 2 × 1.5V LR44 button cell batteries (included)
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Battery Life: ~1,000 hours continuous use
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Dimensions: 15.5 × 3.1 × 2.3 cm (6.1 × 1.25 × 1 in)
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Weight (with case): 76.5 g (2.7 oz)
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Weight (without case): 56.7 g (2.0 oz)
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SKU: 50017 | Barcode: 809390006537
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Origin: South Korea
Applications
- Reverse osmosis (RO) system filter verification and performance monitoring
- Drinking water & tap water purity testing
- Hydroponics nutrient solution TDS monitoring
- Aquaculture & aquarium water quality management
- Colloidal silver concentration measurement
- Swimming pool & spa water chemistry
- Wastewater regulation and environmental testing
- Water conditioning & softener performance testing
- Commercial and field water quality inspection
Why HM Digital TDS-3?
The HM Digital TDS-3 is one of the most trusted handheld TDS meters on the market — combining a wide 0–9990 ppm range, built-in thermometer, ATC, hold function, and an exceptional 1000-hour battery life in a compact, belt-clip case. Whether you’re a water treatment professional, hydroponics grower, aquaculture specialist, or home user verifying your RO filter, the TDS-3 delivers the accuracy and reliability you need at an unbeatable value.
