Details

The methodology for titratable acidity in dairy products is based on a neutralization reaction of the acids in a sample (i.e. lactic acid) with a base (i.e. sodium hydroxide) to produce water:

H⁺+OH^- → H₂O

In an ideal solution, the endpoint of an acid titration corresponds stoichiometrically to the complete neutralization of the acids present. The endpoint for this reaction can be determined visually using a color indicator (i.e. phenolphthalein); however, this endpoint becomes very objective in opaque and colored samples such as milk. The HI84429 removes this issue by titrating to a fixed pH endpoint that is potentiometrically determined by the FC260B half cell pH electrode and HI5315 half cell reference electrode.

The HI84429-50 is a 100 mL bottle of alkaline titrant solution used for the determination of lactic acid in dairy products.

Replacement reagents required to operate the HI84429: