Blue Lab PH 7 Calibration Solution

$11.30 NZD
Approx $7.23 USD $17.99 NZD
Approx $11.51 USD

or 4 payments of $2.83 with
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  • Description
  • Digital pH meters require regular calibration.
  • 250ML
  • You will need both a pH 4 solution and a pH 7 solution to complete calibration.
    Contains Potassium Hydrogen Phthalate.

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