dyelots

A dyelot, or dye lot, is a batch of fibers, yarn, or fabric dyed together under the same conditions to produce a uniform color. Manufacturers assign a dyelot number to each batch to document the dye recipe, fiber content, and processing parameters used. The concept is essential for color control in textile production and retail, because even with the same formula, small variations in dye concentration, temperature, time, pH, fiber batch, or equipment can create shade differences between batches.

To maintain a consistent appearance, items intended to match are usually produced or sold within a single dyelot. When multiple dyelots are involved, achieving exact color matches becomes more challenging and may require blending, additional dyeing, or specialized finishing. Suppliers and textile producers often provide dyelot numbers on labels or invoices to aid traceability and color control.

For makers and consumers, checking dyelot information is important when purchasing large quantities or assembling a project that requires uniform color. If a project spans several dyelots, plans may include purchasing from the same dyelot, requesting color-matching services, or blending pieces from different dyelots to minimize visible differences.

Dyelots are a practical tool for quality control in the textile supply chain, helping ensure consistency across batches and enabling traceability in production and retail contexts.