For patient situations where gingival retraction material containing epinephrine is contraindicated. SilTrax AS. is impregnated with a solution of aluminum sulfate, then dried by a special process, assuring both consistent aluminum sulfate content and hemostatic retraction properties. [72 inches (183cm) per bottle]. Pascal's unique NTS technology helps ensure consistent amounts of medicament throughout the entire length of the retraction cord. Consistent medication can help lead to consistent results.