Reactive Dyeing Frequently Asked Questions
Short answers to the questions buyers ask most often about Reactive Dyeing.
What does it mean?
dye forming a bond with cellulose. Working figures for Reactive Dyeing normally sit around 60-80 degrees with salt and alkali in mainstream production. Note exhaust or pad processes on the tech pack so nobody tests against an older revision.
What value should be specified?
Start from 60-80 degrees with salt and alkali and adjust for the end use of the garment. Record elastane content alongside Reactive Dyeing, because blends shift the measured value. A result outside 60-80 degrees with salt and alkali usually points to process drift rather than to the fibre itself.
How is it tested?
exhaust or pad processes. Keeping reference values for Reactive Dyeing lets suppliers quote without extra sampling rounds. Ask for conditioning details together with exhaust or pad processes, 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 Reactive Dyeing normally sit around 60-80 degrees with salt and alkali in mainstream production. Note exhaust or pad processes 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 Reactive Dyeing, because blends shift the measured value. A result outside 60-80 degrees with salt and alkali usually points to process drift rather than to the fibre itself.
