Application · Denim & dark cotton
Sulphur Black for denim & dark cotton.
For a meaningful trial, define the substrate, target black, current grade, process route, wash/finishing objective and the commercial volume expected after approval.
Commercial evaluation
Compare the finished black, not only the label.
Two Sulphur Black offers can differ in strength, dosage, undertone, process behaviour and effective cost. The better comparison is made on the mill’s own substrate and route against the shade and performance you actually need.
What to send
Qualify the trial before material moves.
Substrate
Fabric/yarn construction and fibre composition.
Target black
Approved standard, undertone and required depth.
Current grade
Commercial name, strength designation and dosage where available.
Process
Dyeing route plus oxidation, wash-off and finishing constraints.
Trial quantity
Laboratory or mill quantity required for evaluation.
Monthly demand
Expected volume after approval and required replenishment timing.
FAQ
Denim / Sulphur Black questions
Should I compare 120%, 150% or 220% only by price?
No. Compare the exact offered product under your own process for dosage, achieved shade, repeatability, performance and total cost.
Can I request a trial quantity?
Yes, subject to current availability. Send the required grade/strength, substrate, target shade and trial timing.
Can reactive black also be compared?
For some dark cotton applications it may be relevant. The decision should consider process, shade, performance and total economics rather than treating the two systems as interchangeable.