Chromic Gut  Monofilaments and Absorbable Sutures are absorbable sterile surgical sutures composed of purified connective tissue (mostly collagen) derived from the serosal layer of beef (bovine) or sheep intestines. They are packaged in a solution of 89% isopropanol, 10% water and 1% triethanolamine. Chromic Gut Absorbable Sutures meet all requirements established by the United States Pharmacopeia (USP) and the European Pharmacopeia (EP) for absorbable surgical sutures.  Chromic Catgut is treated with chromium salt solution to resist body enzymes, thereby prolonging the absorption time to over 90 days. The pure collagen ribbons are submerged into chromic solutions, then electronically spun and purified into evenly chromicized strands of Catgut. This chromic covering not only prolongs the strand's integrity, but also minimizes tissue irritation, causing less internal reaction. The percentage of collagen in the catgut suture often determines the quality of the suture. Higher percentages of collagen allow for: superior tensile strength, longer absorption times, and lower reactions in vivo.
Characteristics of Chromic Catgut Sutures:
?  Chromic Catgut sutures with the highest quality collagen, maintaining a composition of 97%-98% of pure collagen.
?  Chromic Catgut sutures are covered in chromic salt to prolong integrity, minimize tissue reactivity, and minimize the chance of adverse reactions.