How realistic is a 99.463% purity claim for blended vials?

Extremely unrealistic once blended diluted and handled repeatedly.

Purity drops with solvents stoppers and air exposure.

99 percent claims reflect raw powder not vials.

Blending compounding and sterilization all reduce final purity.

Analytical margins alone make three decimal precision doubtful.

Legit pharma rarely advertises such hyper precise purity.

Each handling step introduces variability contamination and degradation.