Acid Dyeing Frequently Asked Questions
Short answers to the questions buyers ask most often about Acid Dyeing.
What does it mean?
dye class for polyamide. Working figures for Acid Dyeing normally sit around 95-100 degrees with pH control in mainstream production. Note jet dyeing with levelling agents on the tech pack so nobody tests against an older revision.
What value should be specified?
Start from 95-100 degrees with pH control and adjust for the end use of the garment. Record elastane content alongside Acid Dyeing, because blends shift the measured value. A result outside 95-100 degrees with pH control usually points to process drift rather than to the fibre itself.
How is it tested?
jet dyeing with levelling agents. Keeping reference values for Acid Dyeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with jet dyeing with levelling agents, since both affect the reading.
Why does it change between lots?
Process variables such as finishing temperature and elastane batch cause the normal spread of results. Working figures for Acid Dyeing normally sit around 95-100 degrees with pH control in mainstream production. Note jet dyeing with levelling agents on the tech pack so nobody tests against an older revision.
Can results be compared across suppliers?
Only when the same standard revision and conditioning are used; otherwise measurements are not equivalent. Record elastane content alongside Acid Dyeing, because blends shift the measured value. A result outside 95-100 degrees with pH control usually points to process drift rather than to the fibre itself.
