COFFEE WIKI
Defects
QUALITY CONTROL
Primary and secondary defects are clearly defined by the Specialty Coffee Association.
Absolutely no primary defects are allowed. Secondary defects are allowed in very small quantities: 5 defects per 350g of green beans, as these do not have a significant impact on the cup scoring.
An assortment of defects including parchment, insect damage, and full black
| Primary Defects | |||
| Full Black | predominantly opaque black beans | ||
| Full Sour | predominantly reddish/yellowish brown | ||
| Dried Pod/Cherry | bean partially/fully enclosed in dark husk | ||
| Fungus Damaged | shows yellowish/brownish fungal attack | ||
| Foreign Matter | non-coffee items like sticks or stones | ||
| Severe Insect Damage | 3+ insect perforations |
| Secondary Defects | |||
| Partial Black | less than 1/2 opaque black | ||
| Partial Sour | less than 1/2 reddish/yellowish brown | ||
| Parchment | partially/fully in dried parchment | ||
| Floater | light colour, low density | ||
| Immature/Unripe | underdeveloped, greenish with silverskin attached | ||
| Withered Bean | light green with wrinkled surface | ||
| Shell | a malformed bean, only the outside | ||
| Broken/Chipped/Cut | fragment or cut bean | ||
| Hull/Husk | part of a dried cherry/husk | ||
| Slight Insect Damage | less than three insect perforations |
| Primary Defects | |||
| Full Black | predominantly opaque black beans | ||
| Full Sour | predominantly reddish/yellowish brown | ||
| Dried Pod/Cherry | bean partially/fully enclosed in dark husk | ||
| Fungus Damaged | shows yellowish/brownish fungal attack | ||
| Foreign Matter | non-coffee items like sticks or stones | ||
| Severe Insect Damage | 3+ insect perforations |
| Secondary Defects | |||
| Partial Black | less than 1/2 opaque black | ||
| Partial Sour | less than 1/2 reddish/yellowish brown | ||
| Parchment | partially/fully in dried parchment | ||
| Floater | light colour, low density | ||
| Immature/Unripe | underdeveloped, greenish with silverskin attached | ||
| Withered Bean | light green with wrinkled surface | ||
| Shell | a malformed bean, only the outside | ||
| Broken/Chipped/Cut | fragment or cut bean | ||
| Hull/Husk | part of a dried cherry/husk | ||
| Slight Insect Damage | less than three insect perforations |