Resin Quality Inspection & Lab Testing

Batch sampling and third-party lab verification: MFI, density, OIT, and thermal stability for HDPE; K-value, impact strength, and Vicat softening point for PVC compound.

What We Do

Document verification tells you what the supplier claims. Lab testing tells you what the resin actually is. We coordinate batch sampling and third-party laboratory testing for all pipe-grade resins — with accredited Chinese labs, results delivered before shipment.

Tests We Coordinate

HDPE (PE100 / PE80 / PE100-RC)

Melt Flow Index (MFI) — ISO 1133, confirms grade consistency and detects blending
Density — ISO 1183, PE100 ≥ 0.954 g/cm³
Oxidation Induction Time (OIT) — ISO 11357-6, measures antioxidant package integrity
Thermal stability — confirms processing window matches grade specification
Carbon black content — for black pipe compound, ISO 6964

PVC-U Compound

K-value — ISO 1628-2, confirms base resin grade
Charpy impact strength — ISO 179
Vicat softening temperature — ISO 306
Calcium carbonate filler content — detects excessive filler substitution

PP-R Pellets

MFI — ISO 1133
Density — ISO 1183
Tensile strength — ISO 527

Sampling Procedure

We collect samples from sealed bags in the warehouse, not factory-provided test specimens. Sampling follows ISO 8967 (polyolefins) or ISO 1265 (PVC powder/compound) as applicable. Chain of custody documentation provided with results.

What You Get

Third-party lab test report (accredited laboratory)
Pass/fail assessment against grade specification
Chain of custody documentation
Results within 5–10 business days of sample collection

Pricing

$300–600 per batch depending on test scope
Included in full-service resin commission engagements for first batch