fibre format

https://doi.org/10.1351/goldbook.10266

Extraction phase in the form of a thin layer supported on a fibre made of inert material, such as fused silica, stainless steel, or nickel-titanium alloy.

Source:
PAC, 2016, 88, 517. (Glossary of terms used in extraction (IUPAC Recommendations 2016)) on page 546 [Terms] [Paper]