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HM Digital TDS-3 Handheld TDS Meter + C-342 NaCl 342 ppm Calibration Solution Bundle | ATC | Carrying Case
HM Digital TDS-3 Handheld TDS Meter + C-342 NaCl Calibration Solution Bundle
Get everything you need for accurate, calibrated TDS measurement right out of the box. This bundle pairs the trusted HM Digital TDS-3 Handheld TDS Meter with the HM Digital C-342 NaCl 342 ppm Calibration Solution — giving you a complete, ready-to-use water quality testing kit for water purification, reverse osmosis (RO) verification, hydroponics, aquaculture, colloidal silver, pool & spa testing, and industrial wastewater monitoring.
What’s Included
HM Digital TDS-3 — Handheld TDS meter with ATC, built-in thermometer, hold function, auto-off, and belt-clip carrying case
HM Digital C-342 — NaCl 342 ppm TDS/EC calibration solution in a lightweight HDPE bottle with foam-lined seal
2 × 1.5V LR44 button cell batteries (included in meter)
TDS-3 Meter – Key Features
Wide Measurement Range: 0–9990 ppm — 0–999 ppm at 1 ppm resolution; 1000–9990 ppm at 10 ppm resolution (blinking ‘x10’ icon)
Built-In Digital Thermometer — Simultaneous temperature measurement from 0–80°C
Automatic Temperature Compensation (ATC) — Accurate readings from 1–50°C (33–122°F) regardless of sample temperature
Hold Function — Freezes measurement on screen for convenient reading and recording
Auto-Off — Shuts off after 10 minutes of non-use to conserve battery
1000-Hour Battery Life — 2 × 1.5V LR44 batteries included; exceptional runtime for field and commercial use
Factory Calibrated — Pre-calibrated with 342 ppm NaCl; recalibration available via mini-screwdriver trimmer
Rugged Carrying Case with Belt Clip — Black vinyl case protects the meter in toolboxes and field environments
Large, Easy-to-Read LCD Display — Clear readout in any lighting condition
C-342 Calibration Solution – Key Features
342 ppm NaCl Calibration Standard — Matches the factory calibration point of the TDS-3 for precise recalibration
Lightweight HDPE Plastic Bottle — Durable, chemical-resistant packaging for lab and field use
Foam-Lined Sealed Cap — Prevents evaporation and contamination between uses
Ideal for Periodic Recalibration — Recommended when testing TDS or conductivity across wide or varying ranges
Technical Specifications – TDS-3 Meter
TDS Range: 0 – 9990 ppm (mg/L)
Resolution: 0–999 ppm: 1 ppm | 1000–9990 ppm: 10 ppm (‘x10’ icon)
Accuracy: ±2%
EC-to-TDS Conversion Factor: NaCl (avg. 0.5)
Temperature Range: 0 – 80°C
Temperature Resolution: 0.1°C (Celsius only)
ATC Range: 1 – 50°C (33 – 122°F)
Power: 2 × 1.5V LR44 button cell batteries (included)
Battery Life: ~1,000 hours continuous use
Dimensions: 15.5 × 3.1 × 2.3 cm (6.1 × 1.25 × 1 in)
Weight (with case): 76.5 g (2.7 oz)
SKU: 500172
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
Industrial wastewater regulation and environmental testing
Water conditioning & softener performance testing
Commercial and field water quality inspection
Why This Bundle?
The C-342 calibration solution matches the exact 342 ppm NaCl factory calibration point of the TDS-3, making this bundle the ideal choice for users who want to maintain peak accuracy over time — especially when testing across wide TDS ranges or in demanding commercial and field environments. Buy the bundle and calibrate with confidence from day one.
