Buffer Solution, pH 5.5 *


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Component CAS-No Weight %
Water 7732-18-5 98.83
Potassium Acid Phthalate 877-24-7 1.02
Sodium Hydroxide 1310-73-2 0.15
Proprietary - 0.01

A buffer solution has the capability to resist change in its pH upon the addition of acid or base in a small quantity. It possesses a working range of pH values and capacity that dictates its stability before any change and the amount by which it will change. It usually consists of a weak conjugate acid-base pair. This pair might contain a weak acid and its conjugate base, or a weak base and its conjugate acid. The choice of the pair is simply dependent upon the desired pH when preparing the buffer solution. Lab Alley’s Buffer Solution, pH 5.5 is a combination of Potassium Acid Phthalate (1.02 wt.%), Sodium Hydroxide (0.15 wt.%), Proprietary (0.01 wt.%), and purified Water (balanced). It appears as a red-tinted opaque liquid having good solubility in water at ambient conditions. In the United States of America (USA), Lab Alley is selling its high-quality Buffer Solution, pH 5.5 online at laballey.com. Due to its high purity, this Lab Alley product is highly recommended for labs and commercial applications.

Common Uses
  • Reagent
  • Calibration of pH meters
  • Titrimetric analysis
Safety and Handling

Please contact us to request a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for Buffer pH 5.5.

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