Subject: Confirm lead-time assumptions and milestones — [project reference]

We need [material and quantity] for [institutional project purpose] at [receiving destination]. Our required receiving milestone is [date and required inputs], followed by [buyer checks or downstream activity]. Please confirm the following against quotation [reference/version]:

- What event starts the estimate, how is that event confirmed, and which prerequisites remain open?
- What is the exact endpoint: material available, dispatch, arrival, or another named milestone?
- Are [named analytical outputs, documents and aliquot configuration] included? When will each be available?
- Who coordinates transport and receipt, and what assumptions remain unconfirmed?
- Please return the milestone worksheet with forecast dates, evidence references, the person coordinating each update and a next-review date. Identify the effect of any requested scope change separately.