Kavita Corporation

The #1 selling handheld TDS meter in the world! This economically priced meter offers unparalleled value and quality. Its attractive housing and retail-ready packing make it an ideal low-cost meter.

• Hold Function
• Auto-off Function
• Includes a TDS chart sticker on the back of the meter that explains TDS values
• Factory Calibrated with a 342 ppm NaCl solution. (Meter can be recalibrated with a mini-screwdriver).

HM Digital AP-1 AquaPro Water Quality Tester measures TDS (0–5000 ppm) and temperature (0–80°C) with ±2% accuracy. Featuring digital calibration, automatic temperature compensation and a large easy-to-read screen, it ensures precise testing for RO water, aquariums, hydroponics, pools and labs. Compact, water-resistant and powered by a CR2032 battery, this USA-designed tester offers reliable performance and durability for professional and home use.

HM Digital DM-2 is a commercial-grade dual TDS monitor that measures feed (input) and product (output) water quality in real time. Ideal for RO, DI, and water treatment systems, it features advanced microprocessor technology for high accuracy and reliability. With digital calibration, diagnostic error messaging, and shielded sensor cables, it ensures precise and stable readings. The auto-off function saves battery life, while factory calibration (342 ppm NaCl) provides consistent results. Includes two ¼” T-fittings and in/out electrode probes for easy installation.

Range: 0-9990 ppm Dual Range – Measures from 0-999 ppm, with a resolution of 1 ppm. From 1000 to 9990 ppm, the resolution is in 10 ppm increments, indicated by a blinking ‘x10’ image.

Accuracy: ±2%

Conversion Factor: NaCl (avg. 0.5)

Cable Length: 46″ (including sensor), shielded cables

Sensor: Dual, 1/4″ diameter for quick-connect fittings (model SP-3, included)

Digital Calibration: Digitally factory calibrated to NaCl 342 ppm. Re-calibration can be done separately for each line.

Power source: 2 x AA batteries (included)

Battery life: Approx. 2 years

Size: 11.6 x 6.8 x1.8 cm (4.6 x 2.6 x .7in.)

Weight: 201.3 g (7.1 oz.)

• Range: 0-9990 ppm
  
  
• Accuracy: ±2%
  
  
• Conversion Factor: NaCl (avg. 0.5)
  
  
• Cable Length: 24.5″ (including sensor)
  
  
• Fittings: 1/4″ standard, also available with 3/8″ or 1/2″
  
  
• Power source: 2 x 1.5V button cell batteries (LR44 or equivalent; included)
  Battery life: approx. 1000 hours of continuous use
  
  
• Size: 7.6 x 2 x 4.7 cm (3 x .8 x 1.9 in.)
  
  
• Weight: 79.4 g (2.8 oz.)

• AMPEREUS Digital pH meter for water testing, soil testing uses, it measure Total Dissolved Solids and water purity. Ideal for aquariums, pools, hydroponics, and RO systems, it ensures precise and reliable results.
• Package includes: 1 Auto ph meter, 3 calibration powders, 1 screw driver, 1 carry box
• Digital pH meter is a scientific instrument used to measure the acidity or alkalinity of a liquid. It consists of a probe and a meter, providing accurate digital readings on a scale from 0 to 14 pH.
• To use pH meter, turn it on, remove the cap, immerse the probe in water, press and hold the button wait for the reading to stabilize, note the TDS value, then turn off the meter, rinse the probe, and replace the cap.