Defect Grading Cambodian Green Coffee: Building a Repeatable QC Check

Defect grading gives buyers a structured way to evaluate the physical preparation of Robusta Cambodia. The value comes from using the same sample size, categories and counting method every time.

Agree on the grading protocol

Buyer and supplier should identify the standard or internal method used for defect assessment. Different programs may classify and weight defects differently, so the contract should not simply state “low defects” without defining what that means.

Sample across the lot

One clean bag does not prove an entire shipment is clean. Commercial inspection should pull representative samples from multiple bags or positions, combine them according to a consistent procedure and record the result by lot.

Link defects to cup impact

Physical grading is a filter, not the whole decision. Some defects have a strong sensory effect; others may matter more for appearance or roasting consistency. Buyers should connect defect data with cupping results.

QC record

• Sample size
• Sampling locations
• Defect categories
• Count or equivalent score
• Foreign matter
• Moisture
• Photos where useful
• Sensory result

For Robusta Cambodia suppliers, consistent defect control can help distinguish carefully prepared coffee from undifferentiated commodity supply.

Related guide

For the broader origin, quality, Mondulkiri and sourcing context, see the Robusta Cambodia complete buyer guide.