gebrauchsfertiger Ansatz

12:19 Apr 19, 2011 

Well I, actually, contrtary to you and Johanna, see nothing wrong in using e.g. "[For the] ready to use preparation/batch:" as a heading followed by instructions which precautions should be taken on producing the stock solution.

"[For the] the ready to use preparation:
When preparing/producing the stock solution always wear a face mask and disposable gloves as xyz is highly poisonous/toxic. ..."

11:19 Apr 19, 2011 

Yes, a direct translation of "gebrauchsfertiger Ansatz" does not seem appropriate here, and the heading could be something like "Precautions prior to preparing the stock solution" or "Precautions for preparing the stock solution". But perhaps, if in this paragraph not only the precautions, but also the preparation itself is mentioned somewhere, a translation like "Preparation of the ready-to-use stock solution/batch" could also be what is meant here.