accuracy solutions concentration

[Biopharmchat]

the 120% and 80% of nominal concentration for accuracy study has to be exact or approximate concentration is okay?

[tom jupille]

I believe that's the *minimum* range over which you have to validate.

[Consumer Products Guy]

the 120% and 80% of nominal concentration for accuracy study has to be exact or approximate concentration is okay?

I think you should target 80 and 120%. And would not need to be exact, we aren't. Usually 90-110% (or tighter) is the spec range for us anyhow for our products.