Absorbency Rate Test Methods and Acceptable Limits
Absorbency Rate is verified through AATCC 79 absorbency. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
AATCC 79 absorbency defines sample size, conditioning and calculation, so values are comparable only within the same revision. Working figures for Absorbency Rate normally sit around below 1-3 seconds in mainstream production. Note AATCC 79 absorbency on the tech pack so nobody tests against an older revision.
Result interpretation
Read the value together with construction notes; below 1-3 seconds is only meaningful for similar fabrics. Record elastane content alongside Absorbency Rate, because blends shift the measured value. A result outside below 1-3 seconds usually points to process drift rather than to the fibre itself.
Typical limits
Buyers commonly write below 1-3 seconds with a stated tolerance, then verify against AATCC 79 absorbency. Keeping reference values for Absorbency Rate lets suppliers quote without extra sampling rounds. Ask for conditioning details together with AATCC 79 absorbency, since both affect the reading.
Sources of variation
Conditioning time, operator technique and shade all influence the result. Working figures for Absorbency Rate normally sit around below 1-3 seconds in mainstream production. Note AATCC 79 absorbency on the tech pack so nobody tests against an older revision.
Documentation
Record the standard revision on every report, because older versions can differ from current practice. Record elastane content alongside Absorbency Rate, because blends shift the measured value. A result outside below 1-3 seconds usually points to process drift rather than to the fibre itself.
