Answer each of the following questions with a short response. Good luck!

1. Where it is stated that you must prepare a solution "fresh," how often must you prepare this solution?
2. Is it essential to prepare standard volumetric solutions at the desired theoretical concentrations?
3. When is it necessary to perform a blank determination for a titration?
4. What constitutes a blank solution?
5. Is it acceptable to standardize a volumetric solution using another volumetric? If so, what are the requirements for the standardizing solution?
6. TRUE or FALSE: Acetic, hydrochloric and sulfuric acids may be standardized against a sodium hydroxide solution that recently has been standardized against a certified primary standard.
7. How should one generally interpret "recently" when relating to volumetric solutions?
8. How long may a stable volumetric solution be used before it has to be either re-standardized or discarded?

How did you do? After you have taken the Quiz, request the answers via E-mail from accureg@regulatory.com. If you include your address, we'll send you a pocket book of the GMPs for Medical Devices or for finished Pharmaceuticals!

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