Confirm the operating reason
State whether dry product is being considered for active-content logistics, storage, transport or installed make-down capability.
Product form should fit the operation rather than serve as a specification shortcut.
Qualify the preparation system
Record feeder, eductor, wetting energy, stock concentration, aging capacity, dilution and transfer path.
Undissolved particles and fish-eyes can hide the candidate's actual drag-reduction potential.
Match hydration to residence time
Measure solution development at the water temperature and chemistry expected on location.
Laboratory aging that exceeds available field time produces an unrealistic ranking.
Apply representative shear
Reproduce transfer pumps, valves and injection restrictions after hydration.
Excess mechanical energy can shorten high-molecular-weight chains and reduce performance.
Compare on active delivered basis
Include product activity, field addition, preparation water, equipment, labor, storage and pressure response.
Price per kilogram alone cannot compare dry and emulsion programs.
Set receiving controls
Check bag integrity, moisture exposure, lot documents, appearance and a retained-reference preparation test.
Keep dry product protected and requalify material changes.