Explanatory notes
… Flax, raw or retted ‑ Flax, broken, scutched, hackled or otherwise processed, but not spun : 5301.21 ‑ ‑ … which surrounds the fibres, either by fermentation (by the action of bacteria or mould) or chemically. This process is … with sodium carbonate; it is then treated with dilute acid, when the stalks are disintegrated by the liberation of …