H-EXCRETION: a program for microcomputers to aid in calculation of acid or base excretion

H-EXCRETION is a program written in BASIC language for microcomputers and designed to facilitate the calculation of excretion for acid or base from a tissue into the surrounding media. The program is designed in such a way to allow considerable variability in different experimental parameters. Five examples of calculation of H+ excretion in the urinary bladder of the toad Bufo marinus are presented.