Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Photo images of alginate matrix tablets hydrated for 2 h in acidic media (pH 1.2) followed by in PB solution (pH 6.8) for 2 h. a, b, c, d, e, f in acidic media and g, h, i, j, k, l in buffer media. m and n Tablet contains 2% sodium bicarbonate. o and p Tablets contains 1.68% citric acid
