CarraSorb H is a gel-forming, High M calcium alginate wound dressing which irrigates easily from the wound bed. It is a non-woven, preservative-free, non-toxic, absorptive dressing manufactured from seaweed. Ideal for highly exudating wounds. When the calcium alginate comes in contact with the sodium-rich wound exudate, it forms a soft gel by exchanging the calcium bound to the alginate with the sodium from the exudate.