A compact, unbranded pocket TDS (Total Dissolved Solids) meter for checking water quality at a glance — drinking water, RO output, aquariums, hydroponics, and general household use. It measures conductivity-based TDS across a 0–9,990 ppm range and auto-shuts-off to save battery. For a specific, independently verified brand with manufacturer-published accuracy specifications, see our HM Digital TDS-3 meter instead — this is the lower-cost, unbranded alternative.

Key features

• 0–9,990 ppm measurement range, covering tap water, well water, and RO output
• Large digital display for quick, clear readings
• Auto-off after a period of inactivity to save battery
• Pocket-sized and lightweight for on-the-go testing

Specifications

Good for

• Quick drinking-water safety checks
• Aquarium and hydroponics TDS monitoring
• Spot-checking RO output and filter performance over time