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PH Buffer Solution pH4 pH7 & pH10 Variety Pack


Free Local Delivery on Orders over $300.

  • A multi pack containing all 3 versions of pH calibration solution to keep your pH pen calibrated and working properly. HM Digital’s pH buffer solution comes in powder form, so it’s lightweight, takes up very little space, is inexpensive and has an indefinite shelf life.


  • Use HM Digitals Calibration Solution for optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges.


  • All 3 buffer solutions to give you the upper edge when calibrating your pH pen
  • Never question if your pH is accurate after proper calibration

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