PGA violet 4-0. ?1/2TP18 (T-28). ?45 cm. ? Absorbable. Average 50-90 days for ??absorption. ?PGA violet: The extraordinarily smooth, low friction proprietary coating reduces tissue drag. These synthetic absorbable sutures ensure closure through the critical wound healing period. They retain approximately 50% of their high initial strength at two weeks and 20% of their strength at three weeks.