• Includes an internal digital thermometer (celsius).
• The smallest and lightest TDS meter available on the market.
• Hold Function - Saves measurements for convenient reading and recording.
• Auto-off function - Turns off meter after 10 minutes of non-use to conserve batteries.
• Dual Range - Measures from 0 - 999 ppm, with a resolution of 1ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x10' image.
• Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.
• Recommended for aquariums & aquaculture, horticulture & hydroponics, pools & spas and water cooler professionals.
• Click here to view our aquarium-specific packaging for the TDS-4TMA.

Ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver.

Perfect for both consumer or commercial use.

Perfect for aquarium owners - salt water fish, fresh water fish or reefs!

Carry one in your pocket at all times!

Measure the TDS levels or temperature of water anywhere, anytime!

• TDS Range: 0-9990 ppm (mg/L)
• Temp. Range: 0-80 degrees Celsius
• Resolution: 1 ppm, 1 degree Celsius
• Accuracy: +/- 2%
• ATC: Built-in sensor for Automatic Temperature Compensation of 1 to 50 degrees Celsius (33 to 122 degrees Farenheit)
• Power source: 2 x 1.5V button cell batteries (included)
• Battery life: over 1000 hours of continuous use
• Dimensions: 14 x 2.3 x 1.5 cm (5.5 x .9 x .55 inches)
• Weight: 34g (1.2 oz)