04 / Acceptance and handover
Prove the result under a representative production condition
Run concentration-path boundaries, trend power, flow, pressure and temperature, and verify mixing, transfer, dilution recovery, residue and a documented maximum operating envelope. Sample spatially and by time to verify lump removal, hydration, viscosity, particle distribution, temperature, air pickup, cycle time, heel and repeatability. Put the sample or test material, method, instrument, production state, duration, limit, witnesses, retained record and deviation authority in the protocol before testing begins. Requalify when a product, package, site, speed or connected system invalidates the accepted basis.