Astringedent hemostatic is an aqueous 15.5% ferric sulfate hemostatic solution with a pH of ~1.0. Astringedent hemostatic solution is well suited for a variety of dental and oral surgery procedures to arrest bleeding. Astringedent hemostatic can be used to prevent leakage caused by sulcular fluid contamination during direct bonding procedures. NOTE: ViscoStat and Astringedent hemostatic agents are more viscous and should be used with a Metal Dento-Infusor tip with, as there is less flow through plastic Blue Mini Dento-Infusor tip. The plastic Dento-Infusor tip should be used when you are dealing with newly healed epithelium, as the softer tip is slightly less aggressive. 30ml IndiSpense syringe.