Astringedent Bottle 30 mLAn aqueous, 12. 7% iron solution, Astringedent X contains equivalent ferric sulfate and ferric subsulfate with a pH of 1. 0. Not as tissue kind as our other hemostatic agents, it is still less acidic than competitive iron subsulfate solutions. A must have for every office. Ideal for difficult cases of heavy capillary bleeding. Designed for use with the Metal Dento Infusor tip. Contains 1 x 30ml bottle.