Wet and dry processes that deliver the final hand and look. This section explains practical decision criteria, typical test methods, and failure modes that matter in real production. Readers get checklists, calculation steps, and case examples connecting specifications to cost, reliability, and compliance. Links map core concepts to upstream inputs and downstream processes so choices remain consistent across sourcing, manufacturing, and end-use performance. Each article includes definitions, diagrams where helpful, and plain-language notes to help newcomers ramp quickly while giving experienced professionals the depth needed to troubleshoot and optimize. Standards references are cited with context, and whenever trade-offs exist, we make them explicit so you can defend decisions. The coverage also includes metrics, data tables, and example calculations so results are reproducible. Where regulations apply, we highlight jurisdiction, scope, and verification pathways. Tools and templates are provided to speed up daily work without sacrificing rigor.
Turns the readings from a set of test specimens into the mean, sample standard deviation, CV% and a confidence interval built on the correct t value for the specimen count – the summary every textile test report has to carry, whatever property was measured.
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Evaluates a continuous washing range as the counter-current cascade it is: computes the wash ratio, the impurity left on the cloth after a given number of boxes at a stated stage efficiency, the same water spent as independent baths for comparison, the boxes a target actually needs and the least water the boxes already built could run on.
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Places a laboratory result against a restricted substance limit with its expanded uncertainty, applies a guard band to give an acceptance limit, converts the result between mg/kg, ppb and percent, and reports the margin against a later limit that a stepped-down threshold will bring.
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Compares a declared fibre composition against a test result fibre by fibre, applies the tolerance as percentage points of total fibre weight rather than as a percentage of the declared figure, shows the band each declaration allows, and removes the tolerance where the label claims a single fibre.
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Estimates cradle-to-gate carbon for one finished garment across five stages – fibre, spinning, fabric formation, wet processing and garment make – and returns a range rather than a single figure, widened by the evidence grade you hold for each stage.
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Fits the per-wash decay of an AATCC 22 spray rating from a measured pair, projects the rating at the claimed wash count with and without heat reactivation, and reports the washes a target rating survives either way.
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Separates process demand from fresh intake through the recycle loop, closes the balance across evaporation, effluent and discharge, and compares specific consumption against a benchmark to give the saving available and the recycle rate that would match it.
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Models sublimation transfer as a saturating time-temperature dose, returning the efficiency a given press cycle achieves against the ceiling, the ink transferred and left on the paper, and what the residue costs per square metre.
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Builds the boiler heat balance from steam demand and feedwater temperature, adds the blowdown heat loss, converts the total to fuel and cost per tonne of steam, and returns the make-up water and the flash steam a condensate return would yield.
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Combines spectrophotometer drift, repeatability and inter-instrument agreement in quadrature into an expanded uncertainty, subtracts it from the shade tolerance as a guard band, and reports which of the three terms is actually consuming the tolerance.
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