TDS / COA / Buyer Process

How to Check TDS and Sample COA Before You Place a Mineral Import Order

A practical review framework for buyers before trial, quotation, and bulk dispatch.

From this guide What to confirm before RFQ
Primary product Silica Sand

Use TDS to understand capability range

TDS shows the grade profile and typical range, but should be read with application context.

  • Check if the listed parameters match your process-critical checks.
  • Separate typical range from strict acceptance requirement.
  • Confirm form, size, and packing references in the same sheet.

Use sample COA to validate trial relevance

A sample COA helps validate whether trial material is close to your buying basis.

  • Match sample COA to the exact grade being quoted.
  • Check testing basis and parameter naming consistency.
  • Clarify any value that sits near your rejection threshold.

Convert documents into buying decisions

Documents are useful only when they are translated into a clear commercial and dispatch plan.

  • Lock technical acceptance points before final quote approval.
  • Align trial outcome with repeat-order specification.
  • Confirm dispatch documents and communication process early.