pH Value of Fabric Why Shipments Get Rejected Over This
Many disputes come down to pH Value of Fabric. Below is what inspectors check and why shipments fail.
The core definition
acidity or alkalinity of extractable liquid. Working figures for pH Value of Fabric normally sit around 4.0 to 7.5 for skin contact in mainstream production. Note ISO 3071 aqueous extract on the tech pack so nobody tests against an older revision.
Most common cause of failure
Results usually fall outside 4.0 to 7.5 for skin contact because the target was never written into the order. Record elastane content alongside pH Value of Fabric, because blends shift the measured value. A result outside 4.0 to 7.5 for skin contact usually points to process drift rather than to the fibre itself.
How it is checked
Inspection and laboratory work both refer to ISO 3071 aqueous extract. Keeping reference values for pH Value of Fabric lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 3071 aqueous extract, since both affect the reading.
Related faults
off-pH fabric causes skin irritation and dye problems, so related complaints often point back to this single parameter. Working figures for pH Value of Fabric normally sit around 4.0 to 7.5 for skin contact in mainstream production. Note ISO 3071 aqueous extract on the tech pack so nobody tests against an older revision.
Avoiding rejection
Agree targets, tolerances and the method before production, then test per lot rather than per shipment. Record elastane content alongside pH Value of Fabric, because blends shift the measured value. A result outside 4.0 to 7.5 for skin contact usually points to process drift rather than to the fibre itself.
