A dye lot is a record taken during the dyeing of yarn to identify yarn that received its coloration in the same vat at the same time. Yarn manufacturers assign each lot a unique identification number and stamp it on the label before shipping. Slight differences in temperature, dyeing time, and other factors can result in different shades of the sa...
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http://en.wikipedia.org/wiki/Dye_lot
Stains, finishes, and paints are manufactured in batches referred to as 'lots.' Each lot produces a specific amount of liquid product that is of exactly the same color and patina. Even though the same ratio of components may be combined to produce the final solution, variations in components, temperature, mixing time, humidly, etc. Play a factor. T...
Found on
http://www.artisansofthevalley.com/comm_gloss3.html
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