Durable Water Repellent (DWR) How to Read It on a Lab Report
Laboratory reports present Durable Water Repellent (DWR) in a compact format. Knowing what each line means prevents misreading.
Definition reminder
finish that makes water bead off. Working figures for Durable Water Repellent (DWR) normally sit around after 20 washes still grade 3+ in mainstream production. Note AATCC 22 after ISO 6330 washing on the tech pack so nobody tests against an older revision.
Common report layout
The report states method AATCC 22 after ISO 6330 washing, sample description, conditioning, and the measured result. Record elastane content alongside Durable Water Repellent (DWR), because blends shift the measured value. A result outside after 20 washes still grade 3+ usually points to process drift rather than to the fibre itself.
Typical result
Values near after 20 washes still grade 3+ usually indicate a conforming lot, assuming the fabric matches the sample submitted. Keeping reference values for Durable Water Repellent (DWR) lets suppliers quote without extra sampling rounds. Ask for conditioning details together with AATCC 22 after ISO 6330 washing, since both affect the reading.
Red flags
Missing revision numbers, unusual conditioning, and results without units all signal unreliable data. Working figures for Durable Water Repellent (DWR) normally sit around after 20 washes still grade 3+ in mainstream production. Note AATCC 22 after ISO 6330 washing on the tech pack so nobody tests against an older revision.
Questions to ask
Ask the laboratory for the standard revision and sample description before accepting or rejecting a result. Record elastane content alongside Durable Water Repellent (DWR), because blends shift the measured value. A result outside after 20 washes still grade 3+ usually points to process drift rather than to the fibre itself.
