A polymer trial should answer whether the complete support-fluid process can construct the project piles reliably and economically. It should not be a demonstration of Marsh viscosity alone.

Phase 1 — Site inputs

Use actual site water and representative soil. Record pH and, where relevant, hardness, conductivity and salinity. Select a trial location that contains the formation controlling project risk.

Phase 2 — Plant batch

Prepare a realistic batch with site equipment. Record actual m³, POLYWELL kg or DRILL-WELL litres, mixing sequence and fresh density/Marsh/pH baseline.

Phase 3 — Trial excavation

Log depth, formation, slurry level, loss rate, density, Marsh, pH and sand at important formation changes. Record every product addition and treated volume.

Phase 4 — Cleaning and pre-concrete

Verify bottom sediment separately from slurry QC. Obtain the representative final sample required by the project. A stable excavation is not sufficient evidence of trial success.

Phase 5 — Review

Use PASS/REVIEW/FAIL under mixing, bore support, slurry management, bottom cleaning and economics. Avoid one artificial overall score that could hide a critical failure.

The final output should be a production method statement: approved water source, starting treatment, mixing procedure, QC windows, treatment rules, cleaning sequence and replacement triggers.