An Inside View of Wool Testing and Fiber Grading

An Inside View of Wool Testing and Fiber Grading

Fiber enthusiasts, growers, breeders and those thinking about raising your own fiber animals, you do not want to miss this very unique opportunity to learn from a knowledgeable teacher!


(One hour presentation with question/answer time after the presentation)


Class Description: Learn why, what, and how we test wool and other animal fibers in an independent, commercial wool testing laboratory to better understand the quality of the fiber which in turn will help you to better market your product in the textile industry.

Maximum Class Size: 10-100

Materials Fee: None, Instructor will provide handouts

Instructor: Angus McColl

Email Address:

Angus McColl is owner of Yocom-McColl Testing Laboratories, Inc., Denver Colorado. He graduated from the University of Wyoming after emigrating to the U.S. from Scotland where he was involved in family farming operations. Yocom-McColl Testing Laboratories, Inc. was formed in 1963 by Angus McColl and Ira Yocom as an independent wool and animal fiber testing facility and utilizes ASTM (American Society for Testing and Materials) and IWTO (International Wool Textile Organization) procedures and methods when testing fibers. The lab operates both Sirolan LaserScan and OFDA100 instruments for the measurement of fiber diameter and distribution.

McColl has been actively involved in developing equipment for sampling and scouring wool in a commercial testing laboratory environment and has promoted correlation testing in the textile industry. He helped to develop new standards by measuring wool, mohair, cashmere, llama, and alpaca samples to support acceptance of ASTM testing methods written by Dr. Robert Stobart, University of Wyoming (ASTM 6466-99 for LaserScan); and Dr. Christopher Lupton, Texas A&M University (ASTM 6500-00 for OFDA100).

In 2005, he completed a study for the Alpaca Research Foundation “Fiber characteristics of the Huacaya Alpaca”, published in the Small Ruminant Research journal with Dr. Christopher Lupton and Dr. Robert Stobart. This study was conducted to establish a comprehensive profile of U.S. huacaya alpaca fiber characteristics that will be useful for educational, selection and breeding purposes. Since 2007, Yocom-McColl has provided fiber testing for Expected Progeny Differences (EPD) included in the Ideal Alpaca Community program and is currently involved in additional EPD studies in the alpaca industry.

Angus McColl and Dr. Christopher Lupton are presently involved in a grant with the Suri Network for the Alpaca Research Foundation (ARF) to study the objective analysis of luster using SAMBA systems designed by Bossa Nova Technology.


© 2010 Scotts Bluff Valley Fiber Arts Fair. All Rights Reserved.

Produced in part by a grant from the Nebraska Division of Travel and Tourism.

Sponsored in part by the Scotts Bluff County Tourism Committee.