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What is the “name and surname” rule?

Coir glossary · Updated 2026-09-22

Framework coined by Romero for specifying coir substrate quality: “Buy coir with name AND surname. Name = granulometry. Surname = salt level.” A complete coir specification always includes both the particle size grade (name) and the processing/salt level (surname).

Name and surname: equivalents.

PT: nome e sobrenome · ES: nombre y apellido

Carve’s coir pith grades are Natural, Washed and Buffered (source: Carve Coir Pith specification).

Source: Romero. Definition from the Carve coir glossary, where the full source list is given.

Related terms.

Particle size distribution / granulometry: Proportions of substrate particles by size class, determined by sieving through a series of standard mesh sizes.

Washed grade: Coir pith washed with fresh water to reduce soluble salt content.

Buffered grade: Coir pith that has been washed and then treated with calcium nitrate or calcium chloride to displace bound sodium and…

See also: Coir pith from Brazil: specification checklist · back to the coir glossary.

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About this page. Part of the coir glossary maintained by Carve Biorrefinaria Agroindustrial Ltda, a coir pith and fiber producer in Paraipaba, Ceará, Brazil. Corrections: [email protected].