Wool testing : Test Report on Supplied Sample

Wool testing : Test Report on Supplied Sample

Accurate test report for wool quality and quantity.

SGS provides a test report describing wool quality and quantity. Samples are submitted without the need for independent sampling and weighing. Benefit from:

  • Quality and quantity certainty for both the buyer and seller
  • Valuable info on how to process the wool efficiently
  • The ability to direct wool into suitable products
Regular price$58.23
SGS provides a test report describing wool quality and quantity. Samples are submitted without the need for independent sampling and weighing.
SGS Wool Testing Services provides independent testing for wool and animal fiber traders, processors and growers. Testing is performed on greasy, scoured wool and carried out to internationally proven International Wool Textile Organisation (IWTO) test methods. The IWTO is an organization created to support fair trading in the wool industry as a whole, from woolgrowers to wool textile traders, processors, spinners and weavers.

How to understand your test results

Yield Determining the amount of clean wool (wool base), and vegetable matter contamination in a sample
Mean fiber diameter The average fineness of the wool (fiber thickness), which is a primary determinant of wool value
Color Measured as tristimulus values, and normally used to assess clean color brightness (Y value) and yellowness (Y-Z value)
Staple length and strength We use the average staple length, staple strength and position of break to assess the performance of apparel wools in the worsted processing system
Bulk This measures the fibers’ ability to fill space and also relates to resilience, which are important properties for applications such as carpets, futons, and insulation
Fiber curvature Relates to bulk, compressibility, and crimp and is cited as an influence on processing
Fiber diameter distribution Information about aspects of the diameter distribution may affect assessments of comfort and processing performance
Medullation Refers to the hollow fibers in wool and other animal fibers, which causes uneven dye uptake and adversely affects appearance in apparel wools (but may be desirable for some carpet types)
Conditioned mass Wool absorbs up to 20 percent of its weight as moisture, so invoicing is based on an agreed moisture content or regain (known as the conditioned mass)
Length After Carding (LAC) A standardized method of simulating semi-worsted processing to estimate mean fiber length after processing. Results Are expressed in Hauteur, Barbe, and length distribution statistics

Why SGS?

The SGS Wool Testing Business was established in 1962 and tests a large portion of the New Zealand clip and wool from other countries. SGS Wool Testing Services has an ISO-17025 accredited laboratory and is fully licensed by IWTO to provide IWTO Test Certificates. Independent sampling is available globally via the extensive SGS network of offices.

How to send your samples to our lab

Download instructions

Key Benefits



Confirm quality and quantity.



Understand how to process wool efficiently.



Direct wool into suitable products.

How it works


1. Request

Receive sampling info and sample sizes required.


2. Order

Order sampling equipment if necessary


3. Pay

Pay testing fees by credit card


4. Post

Post samples for testing to SGS in New Zealand


5. Test

Testing performed by SGS.


6. Certificate

Electronic certificate sent to you by email.

Where our lab is located

SGS New Zealand

48, Kemp st, Kilbirnie, Wellington 6022, New Zealand

Get directions