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Thomas Hegerty
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Join date: Aug 7, 2024
Posts (40)
Oct 20, 2025 ∙ 5 min
Measuring hemp fibre fineness and length: a practical OFDA workflow
Hemp is back in the spotlight for textiles, nonwovens and composites. Yet labs and mills still face a basic problem: how to measure fineness and length consistently . Unlike wool, bast fibres lack a single, trade-standard method that everyone follows for micron/width and true length distribution. Recent reviews emphasise fragmented methods, challenging sample prep, and inconsistent outputs . ( MDPI ) This guide summarises what’s commonly measured today, where the gaps are, and a practical,...
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Oct 19, 2025 ∙ 4 min
IWTO-47 & IWTO-62 explained: practical guides to wool fibre testing
When fibre measurements drive grading, contracts or genetics, method clarity matters. Two IWTO procedures sit at the centre of reliable results: IWTO-47 — measures the mean and distribution of fibre diameter using an Optical Fibre Diameter Analyser (OFDA) . ( member.iwto.org ) IWTO-62 — determines fibre length distribution (true length) and diameter in wool top & slivers using the OFDA4000 . ( member.iwto.org ) Below is a plain-English walkthrough of what each covers (and doesn’t), how...
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Oct 16, 2025 ∙ 3 min
Flax & Linen Fabric Testing: How OFDA Measures Fibre Diameter, Length & Curvature
Flax has earned its place in modern textiles for performance and sustainability, but consistent linen quality still depends on what’s...
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