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HM Digital TDS Meter 4

Regular price $27.99 USD
Regular price Sale price $27.99 USD
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HM Digital TDS-4 pocket-size TDS meter (total dissovled solids meter) is an ideal pocket meter that can be used for any and all applications, ranging from water purification, to hydroponics, to aquariums, to industrial waste water treatment. Perfect for both consumer or commercial use. Carry one in your pocket at all times!

Product Details

• The smallest and lightest TDS meter on the market. Pocket size makes it ideal for portability and storage.
• Sleek design is perfect for personal or consumer use.
• Advanced microprocessor technology.
• Hold Function: saves measurements for convenient reading and recording.
• Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries.
• Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1 ppm. From 1000 to 9990 ppm, the resolution is in increments of 10 ppm, indicated by a blinking 'x10' image.
• Display: large and easy-to-read LCD screen.
• Recommended for fresh water aquariums & aquaculture, horticulture & hydroponics, and pools & spas.
• Factory Calibrated: HM Digital TDS-4 TDS meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.
• 3 Year Manufacturer Warranty
• In Compliance with CE directives

Technical Specifications

Manufacturer Model: TDS-4
Brand: HM Digital
Measures: Total Dissolved Solids (TDS)
Range: 0-9990 ppm (mg/L)

0-999: 1 ppm;
1000-9990: 10ppm
Accuracy: +/- 2%
EC-to-TDS Conversion Factor: NaCl (avg. 0.5)
Power Source:

2 x 1.5v button cell batteries (included) (LR44 or equivalent)
Battery Life: 1000 hours of usage
Dimensions (inches): 5.5" × 0.9" × 0.5"
Dimensions (cm): 140cm × 2.3cm × 1.5cm
Weight: 34g (1.2 oz)

Awards and Certifications