Wool Testing Resources

IWTO maintains the global standards for wool testing and arbitration. These are published in the IWTO Red Book, White Book, and Blue Book. All are reviewed and updated as needed on an annual basis.

Red Book (Specifications)

The Red Book contains all IWTO Test Methods and Draft Test Methods developed for the measurement of wool fibre, yarn and fabric properties. These provide the objective, technical and scientific measurements required for issuing IWTO test certificates.

Test Methods may be purchased either individually, or in a complete set.

To purchase, visit our online store here.

White Book (Regulations)

IWTO Regulations define the sampling and certification procedures and detail the procedures for resolving disputes in relation to certified test results.

To purchase, visit our online store here.

Blue Book (Arbitration)

The Blue Book contains the International Wool Textile Arbitration and other agreements. To purchase, visit our online store here.

Visit our online store to purchase here.

To purchase any of the above, visit our online store here. Once your purchase is complete, you will receive an automatic download.

IWTO Members, these publications are included in your member benefits. To access, log in to the members area via Member Login at the top of this page or click here.