Paper is a naturally absorbent material. Sizing reduces this absorbency to lessen or prevent bleeding and feathering of watery media. Sizing also protects the fiber from oily media as well as dirt & pollution. Twinrocker sizing is an alkylketene dimer, often called just "dimer", in concentrated liquid form. It is used by simply diluting it in water and adding it to the pulp before or after coloring.
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•USE: Use 37 ml per kilo of dry fiber (3-1/3 tsp./lb.). Measure 10 ml. or 1 T. sizing per 14 oz. dry fiber (1 sheet of cotton linters).
•HARDENING: It becomes effective 'hardens' or 'sets-up' after the paper is dry.
•REFRIGERATE: Do not freeze. Shelf life approximately 9 months. The refrigerated shelf-life is 12 months. Wear safety glasses when mixing. Safety data sheets available.