BlueLab PPM Pen

MSRP:$94.00  Our Price: $73.19Save: $20.81

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The Bluelab conductivity pens are the latest innovation for hand held conductivity meters and the ultimate handy solution for measuring conductivity.

Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control.

The Bluelab Conductivity Pens measure how much food the plant has available.

The Bluelab ppm pen provides a compact, quick and handy way to manage the success of your crops to ensure they have the nutrients they need. Teamed with Bluelab's pH Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health.

The Bluelab pH Pen and conductivity Pen range has been specially developed as an affordable and effective option for hobby or small scale growers.

• Measures conductivity and temperature
• Selectable units for conductivity and temperature
• Backlit LCD display
• Calibration optional
• Successful calibration indicator
• Hold function
• Low battery warning
• Fully waterproof
• Auto off function
• Automatic temperature compensation


  • Model: BLU2221
  • Shipping Weight: 0.3lbs
  • Brand: Bluelab
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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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