What is a "type" sample in coffee trading?

In the complex world of international coffee trade, the 'type sample' acts as the ultimate arbiter of truth. When a buyer and seller enter into a contract, they need a way to ensure that the coffee being traded is exactly what was promised. Because coffee is an agricultural product that varies from harvest to harvest, a simple written description of 'Grade 1' or 'Screen 18' is often insufficient. Instead, the parties agree on a type sample—a physical portion of coffee that represents the standard for the entire lot.

This sample is carefully preserved by both the buyer and the seller. It serves as the 'gold standard' for the transaction. When the actual shipment arrives, the buyer will compare it against the type sample. If the arrival coffee looks different, smells off, or fails to cup at the same level as the type sample, the buyer has a clear, objective basis for a claim. This system reduces uncertainty and builds trust in a market where thousands of miles often separate the producer from the roaster.

Creating a type sample is a meticulous process. It must be large enough to allow for multiple rounds of testing, including physical grading for defects and sensory evaluation through cupping. The sample must be stored in a way that prevents it from aging or degrading, as any change in the sample itself would invalidate its role as a reference point. In many cases, the type sample is sealed and kept in a cool, dry environment to maintain its integrity for the duration of the contract.

In practice, the type sample is the bridge between the farm and the final cup. It ensures that the quality expectations set at the point of sale are met at the point of delivery. For the reader, this means that the coffee you enjoy is the result of a highly disciplined supply chain where every step is verified against a reference point. Without the type sample, the global coffee trade would be far more volatile, as there would be no reliable way to hold suppliers accountable for the quality of their product.