Single Jersey Test Methods and Acceptable Limits
Single Jersey is verified through circular single-bed machine. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
circular single-bed machine defines sample size, conditioning and calculation, so values are comparable only within the same revision. Working figures for Single Jersey normally sit around 140-220 GSM in mainstream production. Note circular single-bed machine on the tech pack so nobody tests against an older revision.
Result interpretation
Read the value together with construction notes; 140-220 GSM is only meaningful for similar fabrics. Record elastane content alongside Single Jersey, because blends shift the measured value. A result outside 140-220 GSM usually points to process drift rather than to the fibre itself.
Typical limits
Buyers commonly write 140-220 GSM with a stated tolerance, then verify against circular single-bed machine. Keeping reference values for Single Jersey lets suppliers quote without extra sampling rounds. Ask for conditioning details together with circular single-bed machine, since both affect the reading.
Sources of variation
Conditioning time, operator technique and shade all influence the result. Working figures for Single Jersey normally sit around 140-220 GSM in mainstream production. Note circular single-bed machine 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 Single Jersey, because blends shift the measured value. A result outside 140-220 GSM usually points to process drift rather than to the fibre itself.
