Hanna TDS/PPM Meter-Free Shipping

MSRP:$60.00  Our Price: $39.88Save: $20.12

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Primo testers provide a fast and dependable way to measure the total dissolved solids or conductivity in your water samples. Each tester is ideally suited for the rigorous demands of water quality professionals. Many professionals use the cabled version of the Primo when demonstrating the before and after results of conditioning and filtration systems.

Temperature is compensated automatically to ensure readings are consistent to the standard or reference temperature.

Operating and routine maintenance has never been easier. Primo TDS uses a single button at the top of the meter. Press it once and the meter is powered and ready for use. Press and hold the button for a few seconds and Primo automatically enters calibration mode. Simply open a sachet of calibration solution, dip the probe in, and within seconds the meter recognizes the calibration solution and calibrates itself!


  • Direct probe connection
  • Automatic calibration
  • Automatic temperature compensation
  • Includes batteries and instructions
    • Model: HIPRIMO
    • Shipping Weight: 0.5lbs
    • Brand: Hanna Instruments
    Hanna Checker PH1 Pen-Free Shipping
    MSRP:$60.00  Our Price: $39.88Save: $20.12
    Q: What is the suggested pH range for my hydroponic system and soil plants?
    A: Hydroponic and soil gardens differ in the fact they both need different pH ranges for nutrients to be made available for plant absorption. Maintain a pH between 5.0 and 6.5 for hydroponic gardens and 6.0 to 7.0 for soil applications.

    Q: My pH meter doesn't hold calibration. How often should I recalibrate it?
    A: pH meters do need to be calibrated by the user every day since the membrane does change and is affected by the temperature as well. If pH values are very critical then it will need to be recalibrated several times a day, or before each sample test (depending on how critical the value is). Uncontaminated calibration solution is very important as well. For each calibration, pour some solution in a separate container. Keep out of sunlight and away from heat.
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