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Grochek pHEP 4 WP Meter

The pHEP 4 includes a dual-level LCD, battery level indicator, BEPS, replaceable pH electrode cartridge, stability indicator, automatic shut-off, electrode removal tool, and automatic calibration -- all in a floating, waterproof casing.

It is ideal for users who require the greatest accuracy and features while staying economical.

Features

  • Waterproof and designed to float
  • Automatic temperature compensation
  • Automatic calibration
  • Tactile grip casings
  • HOLD function
  • Automatic shut-off
  • Efficient two button operation
  • Temperature in °C or °F
  • BEPS (Battery Error Prevention System)
  • Battery % displayed at startup
    • Model: HI98127
    • Shipping Weight: 0.3lbs
    • Brand: Hanna Instruments
    Q: Why are PPM, TDS, pH and EC important?
    A: PPM and TDS are abbreviations that represent the concentration of elements in a solution or atmosphere. PPM is short for parts per million and TDS for total dissolved solids. EC (electro conductivity) is another form of measurement for TDS. PH is a measure of acidity or alkalinity which dictates plant uptake of particular elements.

    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.

    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.
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