Paint manufacturers do less testing of raw materials than they did years ago, because most suppliers now guarantee that their products meet all specifications. They provide customers with batch certificates, data tables, and other information and may provide compensation if a product fails to perform and causes paint manufacturing problems or field failures. However, raw material testing still is needed to qualify suppliers and when problems arise. Internally produced materials such as resins also require testing, but only the larger paint companies make their own stuff.
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