Should dosing tolerance be written into the packaging machine purchase contract?

• Must be written into the contract; dosing tolerance is a core acceptance metric. Specify tolerance range, e.g. ±1% or ±0.5g, with material, speed and range conditions. Agree on test method: standard weights or actual product, 30 consecutive samples at rated speed. Define remedies for out-of-tolerance: rework, penalty or rejection, with FAT and SAT verification. List dosing components: load cell, servo motor, PLC parameters must match acceptance criteria.