Buffer Solution pH 4.01

The 4.01 buffer solution is used to calibrate pH or combination mode meters before measuring moderately acidic water-based solutions.
  • Item #: HI7004M
Buffer Solution pH 4.01 in 230 ml plastic bottles. This buffer solution is used to calibrate pH or combination mode meters when measuring moderately acidic water-based samples. Offset fountain solutions containing isopropyl alcohol are usually maintained in this range.
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Price $15.00