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HN-HDR420 General Hydroponics

pH 4.01 Calibration Solution - 1 qt.

Item # HN-HDR420
pH 4.01 Calibration Solution - 1 qt.

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General Hydroponics

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  • Highest quality electronic meter reference solutions
  • Checked by experienced Hydroponics technicians
  • Solutions are exactly calibrated each time
  • Used among many popular brands using Nacl scale
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Guarantee & Returns
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