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| Decision field | Open accessGOTS Certified SuppliersGlobalRemove | Open accessYarn Substitution PlannerGlobalRemove | Free accountWoolmark Learning CentreGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Check standards | Choose materials | Learn techniques |
| Area | Materials | Yarn | Techniques & repair |
| Best for | Checking GOTS certification records | Turning a known project length and candidate package size into a transparent buying estimate while keeping specimen, finished-fabric, care, and supply decisions separate | Structured wool education |
| Know before using | A company result is not a blanket approval; confirm the certificate scope, validity, facility, process, product, and transaction documentation for the exact purchase. | The tool does not verify label values, convert between metres and yards, identify fibre or yarn diameter, assign a yarn-weight category, predict gauge or fabric, prescribe reserve, guarantee required quantity, check dye-lot supply, score candidates, or approve a substitution. A representative treated specimen and project-specific fabric, care, wear, comfort, supply, and quantity review remain required. | This is Woolmark-operated education focused on wool, not a neutral comparison of all fibres or processing systems. A completion badge records coursework, not independent proof of production competence, product performance, environmental impact, or compliance. Confirm technical values and local requirements against current standards before production use. |
| Practical access | |||
| For | Apparel brands | Makers | Both |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Free account |
| Format | Directory | Stitch Authority | Reference |
| Source type | Official registry | Stitch Authority | Industry organization |
| Source and review | |||
| What the source establishes | The official GOTS search exposes certified entities by country, field of operation, product category, and certification detail, including processing and trading scopes. | The planner performs visible arithmetic only on user-entered project length, reserve, package length, package mass, and price. Its connected source-reviewed guide cites the current Craft Yarn Council category, FAQ, WPI, and hook-and-needle guidance plus ASTM and ISO linear-density sources, and explicitly separates label comparison from substitution approval. | The current Woolmark Learning Centre library publishes free account-based coursework with module counts, completion times, progress tracking, knowledge checks, and supporting resources. Its wool programs cover fibre science, raw-wool and yarn processing, dyeing and finishing, woven textiles, knitwear, product quality, and wastewater management for learners and facilitators. |
| Linked page reviewed | Jul 15, 2026 | Jul 16, 2026 | Jul 21, 2026 |
| Next review due | Oct 13, 2026 | Jul 16, 2027 | Jan 17, 2027 |
| Inspect | |||
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