Final Report of the IWTO Colour Working Group
Abstract
The IWTO Colour Working Group has completed work to meet its terms of reference. As result of the activities of the Group, new versions of IWTO-56 Method for the Measurement of Colour of Raw Wool and IWTO-35 Method for the Measurement of Colour of Sliver have been formally approved by IWTO and circulated to registered laboratories. These new versions remove the complexity associated with the numerous options that were available to prepare and measure the wool.
The new versions of IWTO-56 and IWTO-35:
- Detail a reference preparation method which laboratories shall use in preparing samples for colour measurement. Alternative procedures are permitted providing a laboratory equivalence can be demonstrated to the reference method.
- Require that wool samples are measured in D65/10 colour space using an instrument that has been calibrated using CERAM tiles.
- Require that only instruments nominated in the respective Test Methods, or alternative instruments which have demonstrated equivalence to nominated instruments using the established criteria within each Test Method, are used to measure wool samples for colour measurement.
In addition, several other editorial changes were made to simplify the text. These changes and theactivities of the Working Group have been published in IWTO Submissions and Reports (Nice 2002, Buenos Aires 2003).
Citation
"Final Report of the IWTO Colour Working Group", IWTO Colour Working Group, Report 06, Raw Wool Group, IWTO Istanbul(Dubrovnik) Meeting, November 2003.