Purpose of Test
- All garments appropriate for home laundering may be tested, except some items made from stretchy fabric.
Dimensional change = A term representing any change in width or length in fabric after washing and drying.
Standard reference detergent = A powder detergent used in top-load washing machines. For this test, 66 grams is used per load.
Materials Used for Test
- Test specimens
- AATCC Standard Reference Detergent
- Indelible ink marking pen
- Ruler or shrinkage scales
- The testing parameters include various washing temperatures, agitation cycles, and drying methods commonly used in home laundering.
Test Procedure (Summary)
- Part 1: Weighing and washing: A technician weighs the test specimens and ballast to make a specific-sized washing load. They then add detergent and run the washer for a standard amount of time.
- Part 2: Drying and Measuring: The specimen is dried according to test requirements and allowed to cool. Garments are also ironed. Then it is measured for shrinkage, elongation, or other changes following the laundering process.